Our CI (Travis & Kokoro) runs "gradle build", so we need to make
sure that all tasks used in the release process are called during
the build so that breakage can be caught earlier.
In order to stage the GAE folder we need gcloud to be present.
Therefore the Travis config is changed to install gcloud.
See: https://gist.github.com/mjackson/5887963e7d8b8fb0615416c510ae8857
Fix or suppress deprecation warnings except those about GoogleCredential,
which is being handled separately.
The @SuppressWarnings("deprecation") annotation does not cover imports
even when it is at the class level. We removed imports of deprecated
classes and use their fully qualified names in class body.
1. Moved code for the GCP proxy to where the [] proxy code used to live.
3. Corrected reference to the GCP proxy location.
4. Misc changes to make ErrorProne and various tools happy.
+diekmann to LGTM terraform whitelist change.
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