Bug 1546113 - switch to GCP balrog instance for staging releases r=rail

Differential Revision: https://phabricator.services.mozilla.com/D28370

--HG--
extra : moz-landing-system : lando

taskcluster/ci/release-secondary-update-verify-config/kind.yml

@@ -39,7 +39,7 @@ job-defaults:
             production: null
       aus-server:
          by-release-level:
-            staging: "https://aus4.stage.mozaws.net"
+            staging: "https://stage.balrog.nonprod.cloudops.mozgcp.net"
             production: "https://aus5.mozilla.org"
       override-certs:
          by-release-level:

taskcluster/ci/release-update-verify-config/kind.yml

@@ -37,7 +37,7 @@ job-defaults:
             production: null
       aus-server:
          by-release-level:
-            staging: "https://aus4.stage.mozaws.net"
+            staging: "https://stage.balrog.nonprod.cloudops.mozgcp.net"
             production: "https://aus5.mozilla.org"
       override-certs:
          by-release-level:

testing/mozharness/configs/releases/dev_updates_firefox_devedition.py

@@ -20,7 +20,7 @@ config = {
     "archive_prefix": "https://ftp.stage.mozaws.net/pub",
     "previous_archive_prefix": "https://archive.mozilla.org/pub",
     "download_domain": "download.mozilla.org",
-    "balrog_url": "https://aus4.stage.mozaws.net/",
+    "balrog_url": "https://stage.balrog.nonprod.cloudops.mozgcp.net/",
     "balrog_username": "balrog-stage-ffxbld",
     "update_channels": {
         "aurora": {

testing/mozharness/configs/releases/dev_updates_firefox_release_birch.py

@@ -20,7 +20,7 @@ config = {
     "archive_prefix": "https://ftp.stage.mozaws.net/pub",
     "previous_archive_prefix": "https://archive.mozilla.org/pub",
     "download_domain": "download.mozilla.org",
-    "balrog_url": "https://aus4.stage.mozaws.net/",
+    "balrog_url": "https://stage.balrog.nonprod.cloudops.mozgcp.net/",
     "balrog_username": "balrog-stage-ffxbld",
     "update_channels": {
         "beta": {