Autoroll - Fill in the skia.org.domain annotation for nginx.

Bug: skia:9407
Change-Id: I0587c6fe1d0fd215825ac24b5b45b6992d4ed24b
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/240688
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Joe Gregorio <jcgregorio@google.com>
diff --git a/autoroll/go/autoroll-fe/autoroll-fe.yaml.template b/autoroll/go/autoroll-fe/autoroll-fe.yaml.template
index 484e6d3..2d3a48f 100644
--- a/autoroll/go/autoroll-fe/autoroll-fe.yaml.template
+++ b/autoroll/go/autoroll-fe/autoroll-fe.yaml.template
@@ -6,6 +6,7 @@
   name: {{.appName}}
   annotations:
     beta.cloud.google.com/backend-config: '{"ports": {"8000":"skia-default-backendconfig"}}'
+    skia.org.domain: {{.hostName}}
 spec:
   ports:
     - name: metrics