Migrate firebase-tools auth to service account

Signed-off-by: Tamal Saha <tamal@appscode.com>

Author: tamalsaha

.github/workflows/release.yml

@@ -58,20 +58,22 @@ jobs:
 
       - name: QA
         env:
-          FIREBASE_TOKEN: ${{ secrets.FIREBASE_TOKEN }}
-          GOOGLE_CUSTOM_SEARCH_API_KEY: ${{ secrets.GOOGLE_CUSTOM_SEARCH_API_KEY }}
+          FIREBASE_SERVICE_ACCOUNT_KEY: ${{ secrets.FIREBASE_SERVICE_ACCOUNT_QA }}
         if: startsWith(github.event.ref, 'refs/tags/') && (contains(github.ref, '-alpha.') || contains(github.ref, '-beta.'))
         run: |
+          printf '%s' "$FIREBASE_SERVICE_ACCOUNT_KEY" > "$RUNNER_TEMP/firebase-key.json"
+          export GOOGLE_APPLICATION_CREDENTIALS="$RUNNER_TEMP/firebase-key.json"
           npm install
           make docs
           make qa
 
       - name: Release
         env:
-          FIREBASE_TOKEN: ${{ secrets.FIREBASE_TOKEN }}
-          GOOGLE_CUSTOM_SEARCH_API_KEY: ${{ secrets.GOOGLE_CUSTOM_SEARCH_API_KEY }}
+          FIREBASE_SERVICE_ACCOUNT_KEY: ${{ secrets.FIREBASE_SERVICE_ACCOUNT_PROD }}
         if: startsWith(github.event.ref, 'refs/tags/') && (contains(github.ref, '-alpha.') || contains(github.ref, '-beta.')) == false
         run: |
+          printf '%s' "$FIREBASE_SERVICE_ACCOUNT_KEY" > "$RUNNER_TEMP/firebase-key.json"
+          export GOOGLE_APPLICATION_CREDENTIALS="$RUNNER_TEMP/firebase-key.json"
           npm install
           make docs
           make release