Revert "Temporarily remove standalone tester bots from CQ." This reverts commit 8f26346b53d9f818996af8da1421af89cf69caaa. Reason for revert: Should be fixed by updated exclusion spec. Original change's description: > Temporarily remove standalone tester bots from CQ. > > Due to RECIPE CRASH, e.g. > https://ci.chromium.org/ui/p/angle/builders/try/linux-clang-rel/21245/overview > > No-try: true > Bug: angleproject:5114 > Change-Id: I42f76fb370ee5423430955643bffb8c2204fa25f > Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2875717 > Reviewed-by: Yuly Novikov <ynovikov@chromium.org> > Commit-Queue: Yuly Novikov <ynovikov@chromium.org> Bug: angleproject:5114 Change-Id: I781a5a409a9ede005feaf0f3d7bcedac31eaa036 No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2876986 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>