Bug 1143054 - Display emulator-jb on production treeherder r=me a=taskcluster-only

--HG--
extra : source : 50c4d150653dec8a1d39d6a3a4ee449e0c5b661f

testing/taskcluster/tasks/builds/b2g_emulator_jb_debug.yml

@@ -5,10 +5,12 @@ task:
   scopes:
     - 'docker-worker:cache:workspace-emulator-jb-debug'
   metadata:
-    name: '[TC] B2G Emulator JB Debug'
+    name: '[TC] B2G Emulator JB: (Debug)'
 
   extra:
+    # Disable "TC" prefix...
     treeherder:
+      groupSymbol: "?"
       collection:
         debug: true
       machine:

testing/taskcluster/tasks/builds/b2g_emulator_jb_opt.yml

@@ -5,10 +5,15 @@ task:
   scopes:
     - 'docker-worker:cache:workspace-emulator-jb-opt'
   metadata:
-    name: '[TC] B2G JB Emulator Opt'
+    name: '[TC] B2G JB Emulator: (Opt)'
 
   extra:
+    treeherderEnv:
+      - production
+      - staging
+    # Disable "TC" prefix...
     treeherder:
+      groupSymbol: "?"
       machine:
         platform: b2g-emu-jb