Summary:
This diff makes sure that pod lib lint succeeds and the CI is green for iOS.
It got broken when I landed my changes for the refactoring of FlipperKitLayoutPlugin. It wasn't picked up by flipper-oss-ios-job as it builds sample app and sample app had all the paths to the header search path which individually FlipperKitLayoutHelpers and FlipperKitIOSDescriptors were missing.
I will add the validation of pods as a job in sandcastle when one touches FlipperKit pods, this will avoid such cases in future.
## Changelog
Pull Request resolved: https://github.com/facebook/flipper/pull/2140
Test Plan:
Imported from GitHub, without a `Test Plan:` line.
iOS jobs are green on CI in GH.
Reviewed By: passy
Differential Revision: D27417743
Pulled By: priteshrnandgaonkar
fbshipit-source-id: 17aa4b04bf9954c4bd138261103751a245409568