Add query for oslo rpc unit test race bug 1288899

3 hits in 2 weeks in the check queue, but all
failures and on different changes.

Since this is a unit test failure I'm just
fingerprinting on the test case name in the
console logs.

Change-Id: Ia6bbd6377d4ee75e29f1b5cf631919e3feb2e686
Related-Bug: #1288899
Merge "Add query for oslo rpc unit test race bug 1288899"