Bug 1360964 - Promote Taskcluster Mac debug builds to Tier 1 and make sure that tests are scheduled off them. r=Callek

--HG--
extra : rebase_source : 36a5304016b244984bfd2edd95a125aae4381505

taskcluster/ci/build/macosx.yml

@@ -6,7 +6,7 @@ macosx64/debug:
     treeherder:
         platform: osx-10-7/debug
         symbol: tc(B)
-        tier: 2
+        tier: 1
     worker-type: aws-provisioner-v1/gecko-{level}-b-macosx64
     worker:
         implementation: docker-worker

taskcluster/taskgraph/target_tasks.py

@@ -238,9 +238,9 @@ def target_tasks_mozilla_beta(full_task_graph, parameters):
         platform = task.attributes.get('build_platform')
         if platform in ('linux64-pgo', 'linux-pgo', 'win32-pgo', 'win64-pgo',
                         'android-api-15-nightly', 'android-x86-nightly',
-                        'win32', 'win64', 'macosx64'):
+                        'win32', 'win64'):
             return False
-        if platform in ('linux64', 'linux'):
+        if platform in ('linux64', 'linux', 'macosx64'):
             if task.attributes['build_type'] == 'opt':
                 return False
         # skip l10n, beetmover, balrog