Don't abort HWTests for unimportant builders.
Don't abort HWTests for unimportant builders.

The CQ stopped running HWTests recently due to a bug in the CQ. Sonic is an
experimental builder which currently is not working. For that reason it is
marked as unimportant. Unimportant builders should not block the CQ or abort
HWTests, so this CL fixes that.

BUG=chromium:239823
TEST=Unit tests.

Change-Id: I957104b56e5b0cb51080a1b1357e54c90453effa
Reviewed-on: https://gerrit.chromium.org/gerrit/50839
Commit-Queue: David James <f231dc574bbeb62604660cbc162d1b8642a0a3af@chromium.org>
Tested-by: David James <f231dc574bbeb62604660cbc162d1b8642a0a3af@chromium.org>
Reviewed-by: Mike Frysinger <8f3f75c74bd5184edcfa6534cab3c13a00a2f794@chromium.org>

bpsinc-native/src_third_party_chromite,chadversary/chromiumos.chromite,chadversary/chromiumos.chromite,bpsinc-native/src_third_party_chromite,bpsinc-native/src_third_party_chromite