Bug 1370343 - Make add-new-tasks context be for groups rather than tasks r=dustin

MozReview-Commit-ID: SxIRKBORON

--HG--
extra : rebase_source : 1529957e2456eb9da6ac33721e0047a367f5f70b

taskcluster/taskgraph/actions/add-new-jobs.py

@@ -21,7 +21,7 @@ from taskgraph.taskgraph import TaskGraph
     symbol='add-new',
     description="Add new jobs using task labels",
     order=10000,
-    context=[{}],
+    context=[],
     schema={
         'type': 'object',
         'properties': {