Bug 1339604 - stylo builds + tests should only run on m-c and stylo branch to reduce budget impact r=bholley a=merge

MozReview-Commit-ID: 2YlYAeoRHXC

--HG--
extra : source : 2fe83738221a0d438ccd33ffe8c9ee3c980c1ab3

taskcluster/ci/test/tests.yml

@@ -934,8 +934,7 @@ reftest-stylo:
     chunks: 16
     run-on-projects:
         by-test-platform:
-            linux64-stylo/opt: []
-            linux64-stylo/debug: []
+            linux64-stylo/.*: [ 'stylo', 'autoland', 'mozilla-inbound', 'mozilla-central' ]
     e10s:
         by-test-platform:
             linux64-stylo/opt: