Upgrade python/google-api-python-client to v1.7.8
Test: build Change-Id: I78a3fbadfee360f092ef9bb73c6e3a1fd23af6e4
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Test: build Change-Id: I78a3fbadfee360f092ef9bb73c6e3a1fd23af6e4
mentioned in commit 378e315f
mentioned in commit 5f1b5cc2
mentioned in commit db5bd690