Restore pod lib lint testing to public (#1958)

* AnalyticsInterop 1.1.0 is public so restore pod lib lint testing
* better if_changed checking

Author: paulb777

scripts/if_changed.sh

@@ -47,7 +47,11 @@ else
   case "$PROJECT-$METHOD" in
     Firebase-*)
       check_changes '^(Firebase/Auth|Firebase/Core|Firebase/Database|Firebase/DynamicLinks|'\
-'Firebase/Messaging|Firebase/Storage|Functions|GoogleUtilities|Example)'
+'Firebase/Messaging|Firebase/Storage|Functions|GoogleUtilities|Interop|Example|'\
+'FirebaseAnalyticsIntop.podspec|FirebaseAuth.podspec|FirebaseAuthInterop.podspec|'\
+'FirebaseCore.podspec|FirebaseDatabase.podspec|FirebaseDynamicLinks.podspec|'\
+'FirebaseFunctions.podspec|FirebaseMessaging.podspec|FirebaseStorage.podspec|'\
+'FirebaseStorage.podspec)'
       ;;
 
     InAppMessagingDisplay-*)

scripts/pod_lib_lint.sh

@@ -38,7 +38,6 @@ fi
 # manually pushed to a temporary Specs repo. See
 # https://guides.cocoapods.org/making/private-cocoapods.
 #ALT_SOURCES="--sources=https://github.com/paulb777/Specs.git,https://github.com/CocoaPods/Specs.git"
-ALT_SOURCES="--sources=https://github.com/paulb777/Specs.git,https://github.com/CocoaPods/Specs.git"
 
 podspec="$1"
 if [[ $# -gt 1 ]]; then