Bring back signal-related tests
Reverts I90e1d26a67a349f897d895f750d8e57fae98ec1f and
I116a96b20082d1c47068ddc64873200e9ae33a27 .
There have been a few changes that should enable these tests to
succeed on a regular basis, all related to edge cases around updating
a resource's atomic_key and metadata:
Corrected max secs for concurrent trans retries
e37d9fab8fe2e779ae8c0e2311de2601b66c66b6
Don't set metadata for deleted resources
8d7e3e41e8f02726dca33b5ec2f6d5b6b6b07a31
Allow retries when resource acquires lock
2ec2d5a973927f9a2cc2a62f70712afc5cb30f4c
Change-Id: I0fe508cf102bc1041a16c5ce1d9e384ecd591173
1 file changed