Bug 1425931: Allow specifying eslint via try syntax; r=me

MozReview-Commit-ID: EEWnETcuSnJ

--HG--
extra : rebase_source : 5350874be060d8e70d5b94cd8b3d96a7b492b804
extra : source : 73dfbb370c79dba788c0cb8ee1399cd3ff3139ca

taskcluster/ci/source-test/kind.yml

@@ -5,6 +5,7 @@
 loader: taskgraph.loader.transform:loader
 
 transforms:
+    - taskgraph.transforms.try_job:transforms
    - taskgraph.transforms.source_test:transforms
    - taskgraph.transforms.job:transforms
    - taskgraph.transforms.task:transforms

taskcluster/ci/source-test/mozlint.yml

@@ -1,15 +1,18 @@
+job-defaults:
+    always-target: true
+    treeherder:
+        kind: test
+        tier: 1
+    worker-type: aws-provisioner-v1/gecko-t-linux-xlarge
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+
 eslint:
     description: JS lint check
     platform: lint/opt
     treeherder:
         symbol: ES
-        kind: test
-        tier: 1
-    worker-type: aws-provisioner-v1/gecko-t-linux-xlarge
-    worker:
-        docker-image:
-          in-tree: "lint"
-        max-run-time: 1800
     run:
         using: run-task
         comm-checkout: true
@@ -19,4 +22,4 @@ eslint:
             ln -s ../tools/lint/eslint/eslint-plugin-mozilla node_modules &&
             ln -s ../tools/lint/eslint/eslint-plugin-spidermonkey-js node_modules &&
             cd /builds/worker/checkouts/gecko/comm &&
-            ../mach lint -l eslint -f treeherder --quiet
+            ../mach lint -f treeherder -l eslint --quiet