fix(ci): add a retry loop on the image download (#13165)

Author: alevenberg

ci/cloudbuild/cloudbuild.yaml

@@ -74,8 +74,9 @@ steps:
     '--cache=true',
     '--destination=gcr.io/${PROJECT_ID}/${_IMAGE}:${BUILD_ID}',
     '--push-retry=3',
-    '--image-fs-extract-retry=3'
-  ]
+    '--image-fs-extract-retry=3',
+    '--image-download-retry=3'
+]
 
   # Pull the docker image. The step running 'ci/cloud/build.sh' would do this
   # automatically, and also fill the log with about 2-3 pages of noise.