tree 75f32cdb3d0cac68ad77fe2b5fae6a3c80b62fba
parent 163d4d0184b5d1521e9607c135271cdc2b586731
author vadimt <vadimt@google.com> 1579292420 -0800
committer vadimt <vadimt@google.com> 1579642177 -0800

Automatically diagnosing known flakes

It often takes a long time to fix a flake; meanwhile it takes a lot of
time for sheriffs to identify whether to register a new flake for a
failure.

This CL adds automatic identifies identification of one know flake type.
Once identified, it rewrites the error so that:
1. Flakes clustering tool that has only rudimentary clustering, places
all flakes of this kind in the same cluster (not multiple ones like
now). This is a step towards using clustering tool for monitoring
flakes;
2. Sheriff immediately sees that the issue is known.

Change-Id: I86a0762665cb21434289e1be00b60bd76fec4142