Ignore 145-alloc-tracking-stress run-test failures with CC.

This run-test sometimes fails with a timeout on ART
Builbot's x86-64 concurrent collector configuration. Disable
it to make the build turn green again, while we investigate
the failure.

Bug: 27467554
Change-Id: I0bac307ec85f197afb8763ca41a6ee50567c4d5f