When signing a shallow bundle with storybook "bundles," the storybook
bundles should not be signed.

```
$ rcodesign debug-create-macho MyApp.app/MyApp
assuming default minimum version 11.0.0
writing Mach-O to MyApp.app/MyApp

$ rcodesign debug-create-info-plist --bundle-name MyApp MyApp.app/Info.plist
writing MyApp.app/Info.plist

$ mkdir -p MyApp.app/Base.lproj/Main.storyboardc
$ touch MyApp.app/Base.lproj/Main.storyboardc/test.nib

$ rcodesign debug-create-info-plist --empty --bundle-name ignored MyApp.app/Base.lproj/Main.storyboardc/Info.plist
writing MyApp.app/Base.lproj/Main.storyboardc/Info.plist

$ cat MyApp.app/Base.lproj/Main.storyboardc/Info.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict/>
</plist>
$ touch MyApp.app/PkgInfo
$ touch MyApp.app/embedded.mobileprovision

$ rcodesign sign MyApp.app MyApp.app.signed
signing MyApp.app to MyApp.app.signed
signing bundle at MyApp.app
signing bundle at MyApp.app into MyApp.app.signed
signing main executable MyApp

$ rcodesign debug-file-tree MyApp.app.signed
d                      MyApp.app.signed/
d                      MyApp.app.signed/Base.lproj
d                      MyApp.app.signed/Base.lproj/Main.storyboardc
f d0db6a79107b15f10e16 MyApp.app.signed/Base.lproj/Main.storyboardc/Info.plist
f e3b0c44298fc1c149afb MyApp.app.signed/Base.lproj/Main.storyboardc/test.nib
f 0a5902dc8e47f490d038 MyApp.app.signed/Info.plist
f 1d11f3a2cb072f0c9969 MyApp.app.signed/MyApp
f e3b0c44298fc1c149afb MyApp.app.signed/PkgInfo
d                      MyApp.app.signed/_CodeSignature
f dea493de64a991ac1fd6 MyApp.app.signed/_CodeSignature/CodeResources
f e3b0c44298fc1c149afb MyApp.app.signed/embedded.mobileprovision

$ rcodesign print-signature-info MyApp.app.signed
- path: Base.lproj/Main.storyboardc/Info.plist
  file_size: 180
  file_sha256: d0db6a79107b15f10e169d17bc2ef3395631f5932cd2552a7422e82f31e3f413
  entity: other
- path: Base.lproj/Main.storyboardc/test.nib
  file_size: 0
  file_sha256: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
  entity: other
- path: Info.plist
  file_size: 576
  file_sha256: 0a5902dc8e47f490d03889d3593d17bddbf79e6c1f79494e20dd28f9459effa5
  entity: other
- path: MyApp
  file_size: 22544
  file_sha256: 1d11f3a2cb072f0c996981756ccb080e9f35a0cce03c46220eb198c0c97406e2
  entity:
    mach_o:
      macho_linkedit_start_offset: 16384 / 0x4000
      macho_signature_start_offset: 16400 / 0x4010
      macho_signature_end_offset: 16821 / 0x41b5
      macho_linkedit_end_offset: 22544 / 0x5810
      macho_end_offset: 22544 / 0x5810
      linkedit_signature_start_offset: 16 / 0x10
      linkedit_signature_end_offset: 437 / 0x1b5
      linkedit_bytes_after_signature: 5723 / 0x165b
      signature:
        superblob_length: 421 / 0x1a5
        blob_count: 3
        blobs:
        - slot: CodeDirectory (0)
          magic: fade0c02
          length: 365
          sha1: ab5c39d99e4374adec9ff318431e0ad8f4e1a132
          sha256: 742baf721b17b851139efc4c6e8aba3089e100ab8b00c7a6db6379078a695d7f
        - slot: RequirementSet (2)
          magic: fade0c01
          length: 12
          sha1: 3a75f6db058529148e14dd7ea1b4729cc09ec973
          sha256: 987920904eab650e75788c054aa0b0524e6a80bfc71aa32df8d237a61743f986
        - slot: CMS Signature (65536)
          magic: fade0b01
          length: 8
          sha1: 2a7254313aa41796079bb0e9d0f044345f69f98b
          sha256: e6c83bc98a10348492c7d4d2378a54572ef29e1a5692ccd02b5e29f4b762d6a0
        code_directory:
          version: '0x20400'
          flags: CodeSignatureFlags(ADHOC)
          identifier: com.example.mybundle
          digest_type: sha256
          platform: 0
          signed_entity_size: 16400
          executable_segment_flags: ExecutableSegmentFlags(MAIN_BINARY)
          code_digests_count: 5
          slot_digests:
          - 'Info (1): 0a5902dc8e47f490d03889d3593d17bddbf79e6c1f79494e20dd28f9459effa5'
          - 'RequirementSet (2): 987920904eab650e75788c054aa0b0524e6a80bfc71aa32df8d237a61743f986'
          - 'Resources (3): dea493de64a991ac1fd6e9e9feab78408748cc96130c86bd0bb5989d86d9c39b'
        cms: null
- path: PkgInfo
  file_size: 0
  file_sha256: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
  entity: other
- path: _CodeSignature/CodeResources
  file_size: 2631
  file_sha256: dea493de64a991ac1fd6e9e9feab78408748cc96130c86bd0bb5989d86d9c39b
  entity:
    bundle_code_signature_file: !ResourcesXml
    - <?xml version="1.0" encoding="UTF-8"?>
    - <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
    - <plist version="1.0">
    - <dict>
    - '  <key>files</key>'
    - '  <dict>'
    - '    <key>Base.lproj/Main.storyboardc/Info.plist</key>'
    - '    <data>'
    - '    n9hnu0WwQx9uSvF9Zek1KUmSMvY='
    - '    </data>'
    - '    <key>Base.lproj/Main.storyboardc/test.nib</key>'
    - '    <data>'
    - '    2jmj7l5rSw0yVb/vlWAYkK/YBwk='
    - '    </data>'
    - '    <key>Info.plist</key>'
    - '    <data>'
    - '    Zb8cJrxjzN/maIzHh7BviPNDXvA='
    - '    </data>'
    - '    <key>PkgInfo</key>'
    - '    <data>'
    - '    2jmj7l5rSw0yVb/vlWAYkK/YBwk='
    - '    </data>'
    - '    <key>embedded.mobileprovision</key>'
    - '    <data>'
    - '    2jmj7l5rSw0yVb/vlWAYkK/YBwk='
    - '    </data>'
    - '  </dict>'
    - '  <key>files2</key>'
    - '  <dict>'
    - '    <key>Base.lproj/Main.storyboardc/Info.plist</key>'
    - '    <dict>'
    - '      <key>hash2</key>'
    - '      <data>'
    - '      0NtqeRB7FfEOFp0XvC7zOVYx9ZMs0lUqdCLoLzHj9BM='
    - '      </data>'
    - '    </dict>'
    - '    <key>Base.lproj/Main.storyboardc/test.nib</key>'
    - '    <dict>'
    - '      <key>hash2</key>'
    - '      <data>'
    - '      47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU='
    - '      </data>'
    - '    </dict>'
    - '    <key>embedded.mobileprovision</key>'
    - '    <dict>'
    - '      <key>hash2</key>'
    - '      <data>'
    - '      47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU='
    - '      </data>'
    - '    </dict>'
    - '  </dict>'
    - '  <key>rules</key>'
    - '  <dict>'
    - '    <key>^.*</key>'
    - '    <true/>'
    - '    <key>^.*/.lproj/</key>'
    - '    <dict>'
    - '      <key>optional</key>'
    - '      <true/>'
    - '      <key>weight</key>'
    - '      <real>1000</real>'
    - '    </dict>'
    - '    <key>^.*/.lproj/locversion.plist$</key>'
    - '    <dict>'
    - '      <key>omit</key>'
    - '      <true/>'
    - '      <key>weight</key>'
    - '      <real>1100</real>'
    - '    </dict>'
    - '    <key>^Base/.lproj/</key>'
    - '    <dict>'
    - '      <key>weight</key>'
    - '      <real>1010</real>'
    - '    </dict>'
    - '    <key>^version.plist$</key>'
    - '    <true/>'
    - '  </dict>'
    - '  <key>rules2</key>'
    - '  <dict>'
    - '    <key>.*/.dSYM($|/)</key>'
    - '    <dict>'
    - '      <key>weight</key>'
    - '      <real>11</real>'
    - '    </dict>'
    - '    <key>^(.*/)?/.DS_Store$</key>'
    - '    <dict>'
    - '      <key>omit</key>'
    - '      <true/>'
    - '      <key>weight</key>'
    - '      <real>2000</real>'
    - '    </dict>'
    - '    <key>^.*</key>'
    - '    <true/>'
    - '    <key>^.*/.lproj/</key>'
    - '    <dict>'
    - '      <key>optional</key>'
    - '      <true/>'
    - '      <key>weight</key>'
    - '      <real>1000</real>'
    - '    </dict>'
    - '    <key>^.*/.lproj/locversion.plist$</key>'
    - '    <dict>'
    - '      <key>omit</key>'
    - '      <true/>'
    - '      <key>weight</key>'
    - '      <real>1100</real>'
    - '    </dict>'
    - '    <key>^Base/.lproj/</key>'
    - '    <dict>'
    - '      <key>weight</key>'
    - '      <real>1010</real>'
    - '    </dict>'
    - '    <key>^Info/.plist$</key>'
    - '    <dict>'
    - '      <key>omit</key>'
    - '      <true/>'
    - '      <key>weight</key>'
    - '      <real>20</real>'
    - '    </dict>'
    - '    <key>^PkgInfo$</key>'
    - '    <dict>'
    - '      <key>omit</key>'
    - '      <true/>'
    - '      <key>weight</key>'
    - '      <real>20</real>'
    - '    </dict>'
    - '    <key>^embedded/.provisionprofile$</key>'
    - '    <dict>'
    - '      <key>weight</key>'
    - '      <real>20</real>'
    - '    </dict>'
    - '    <key>^version/.plist$</key>'
    - '    <dict>'
    - '      <key>weight</key>'
    - '      <real>20</real>'
    - '    </dict>'
    - '  </dict>'
    - </dict>
    - </plist>
    - ''
- path: embedded.mobileprovision
  file_size: 0
  file_sha256: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
  entity: other

```
