Run CocoaPods tests in travis test stage (#2935)

* gitignore Gemfile.lock

Author: paulb777

.gitignore

@@ -91,3 +91,6 @@ default.profraw
 # Firestore emulator
 cloud-firestore-emulator.log
 cloud-firestore-emulator.pid
+
+# Let Gemfiles in CocoaPodsIntegrationTest float to catch issues asap
+CocoaPodsIntegrationTest/**/Gemfile.lock

.travis.yml

@@ -8,8 +8,6 @@ cache:
 stages:
   - checks
   - test
-  - name: cocoapods_compatibility_check
-    if: type = cron
 
 jobs:
   include:
@@ -241,38 +239,44 @@ jobs:
     # Validate Cocoapods configurations
     # This may take long time, so we would like to run it only once all other tests pass
     # Validate Cocoapods 1.7.0 compatibility
-    - stage: cocoapods_compatibility_check
+    - stage: test
+      if: type = cron
       env:
         - POD_CONFIG_DIR=Cocoapods1_7_0_multiprojects_frameworks
       script:
         - travis_retry ./CocoapodsIntegrationTest/scripts/build_with_environment.sh --gemfile=./CocoapodsIntegrationTest/TestEnvironments/${POD_CONFIG_DIR}/Gemfile --podfile=./CocoapodsIntegrationTest/TestEnvironments/${POD_CONFIG_DIR}/Podfile
 
-    - stage: cocoapods_compatibility_check
+    - stage: test
+      if: type = cron
       env:
         - POD_CONFIG_DIR=Cocoapods1_7_0_frameworks
       script:
         - travis_retry ./CocoapodsIntegrationTest/scripts/build_with_environment.sh --gemfile=./CocoapodsIntegrationTest/TestEnvironments/${POD_CONFIG_DIR}/Gemfile --podfile=./CocoapodsIntegrationTest/TestEnvironments/${POD_CONFIG_DIR}/Podfile
 
-    - stage: cocoapods_compatibility_check
+    - stage: test
+      if: type = cron
       env:
         - POD_CONFIG_DIR=Cocoapods1_7_0_multiprojects_staticLibs
       script:
         - travis_retry ./CocoapodsIntegrationTest/scripts/build_with_environment.sh --gemfile=./CocoapodsIntegrationTest/TestEnvironments/${POD_CONFIG_DIR}/Gemfile --podfile=./CocoapodsIntegrationTest/TestEnvironments/${POD_CONFIG_DIR}/Podfile
 
-    - stage: cocoapods_compatibility_check
+    - stage: test
+      if: type = cron
       env:
         - POD_CONFIG_DIR=Cocoapods1_7_0_staticLibs
       script:
         - travis_retry ./CocoapodsIntegrationTest/scripts/build_with_environment.sh --gemfile=./CocoapodsIntegrationTest/TestEnvironments/${POD_CONFIG_DIR}/Gemfile --podfile=./CocoapodsIntegrationTest/TestEnvironments/${POD_CONFIG_DIR}/Podfile
 
     # Validate Cocoapods 1.6.1 compatibility
-    - stage: cocoapods_compatibility_check
+    - stage: test
+      if: type = cron
       env:
         - POD_CONFIG_DIR=Cocoapods1_6_1_frameworks
       script:
         - travis_retry ./CocoapodsIntegrationTest/scripts/build_with_environment.sh --gemfile=./CocoapodsIntegrationTest/TestEnvironments/${POD_CONFIG_DIR}/Gemfile --podfile=./CocoapodsIntegrationTest/TestEnvironments/${POD_CONFIG_DIR}/Podfile
 
-    - stage: cocoapods_compatibility_check
+    - stage: test
+      if: type = cron
       env:
         - POD_CONFIG_DIR=Cocoapods1_6_1_staticLibs
       script: