Revert previous change to use concourse registry image (#1321)

* Revert previous change to use concourse registry image

Attempting to rebuild forked with a newer version of the container-registry go plugin

* Update windows-image-build-staging.jsonnet

* Add context to authenticator call in types.go

* Fix imports

* Fix context declaration

* Update types.go

* Downgrade to 0.12.1

See if this works instead of latest, as it could have introduced other issues.

* Drop context from NewEnvAuthenticator

Not present in the version I reverted to.

* Revert go mod changes; attempt to use native registry-image

The newer versions of this should not need the fork anymore

concourse/pipelines/windows-image-build-staging.jsonnet

@@ -28,9 +28,6 @@ local publishresulttask = {
     source: {
       repository: 'gcr.io/gcp-guest/concourse-metrics',
       tag: 'latest',
-      // Use workload id to pull image
-      google_auth: true,
-      debug: true,
     },
   },
   run: {
@@ -634,11 +631,6 @@ local ImgGroup(name, images) = {
       source: { repository: 'frodenas/gcs-resource' },
       type: 'registry-image',
     },
-    {
-      name: 'registry-image',
-      type: 'registry-image',
-      source: { repository: 'concourse/concourse' },
-    },
   ],
   resources: [
                common.GitResource('compute-image-tools'),