bigtable.hbase.mirroring.TestMirroringTable: many tests failed

Many tests failed at the same time in this package.

* I will close this issue when there are no more failures in this package _and_
there is at least one pass.
* No new issues will be filed for this package until this issue is closed.
* If there are already issues for individual test cases, I will close them when
the corresponding test passes. You can close them earlier, if you prefer, and
I won't reopen them while this issue is still open.

Here are the tests that failed:
* testIncrementPrimaryErrors
* testAppendPrimaryErrors
* testGet
* testPut
* testBatch
* testPuts
* testIncrement
* testCheckAndDeletePrimaryErrors
* testDeleteWithPrimaryErrors
* testCheckAndPut
* testBatchWithPrimaryErrors
* testCheckAndDelete
* testCheckAndMutate
* testAppend
* testDelete
* testExists
* testCheckAndMutatePrimaryErrors
* testCheckAndPutPrimaryErrors
* testExistsWithPrimaryErrors
* testPutWithPrimaryErrors
* testGetWithPrimaryErrors

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commit: 5baea50051eb2372f40a1aeba11443223687d836
buildURL: [Build Status](https://source.cloud.google.com/results/invocations/4f3bae3f-42ac-435d-9063-849104825269), [Sponge](http://sponge2/4f3bae3f-42ac-435d-9063-849104825269)
status: failed