CI Test Update (#7473)

Alters the CI test to only add the google-services.json file from
secrets if the secret is present

Co-authored-by: David Motsonashvili <davidmotson@google.com>

Author: davidmotson

.github/workflows/ci_tests.yml

@@ -64,6 +64,7 @@ jobs:
       - name: Add google-services.json
         env:
           INTEG_TESTS_GOOGLE_SERVICES: ${{ secrets.INTEG_TESTS_GOOGLE_SERVICES }}
+        if: env.INTEG_TESTS_GOOGLE_SERVICES != '' && env.INTEG_TESTS_GOOGLE_SERVICES != 'null'
         run: |
           echo $INTEG_TESTS_GOOGLE_SERVICES | base64 -d > google-services.json
 
@@ -129,6 +130,7 @@ jobs:
       - name: Add google-services.json
         env:
           INTEG_TESTS_GOOGLE_SERVICES: ${{ secrets.INTEG_TESTS_GOOGLE_SERVICES }}
+        if: env.INTEG_TESTS_GOOGLE_SERVICES != '' && env.INTEG_TESTS_GOOGLE_SERVICES != 'null'
         run: |
           echo $INTEG_TESTS_GOOGLE_SERVICES | base64 -d > google-services.json
       - uses: google-github-actions/auth@71f986410dfbc7added4569d411d040a91dc6935 # v2.1.8