deploy: frontend deploy updates

- Add region to update-traffic command
- Run warmups post frontend deploy

Change-Id: I5b8d458ec8db54e72d0c78bfe267d388deff8312
Reviewed-on: https://go-review.googlesource.com/c/pkgsite/+/367595
Trust: Jamal Carvalho <jamal@golang.org>
Run-TryBot: Jamal Carvalho <jamal@golang.org>
TryBot-Result: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
diff --git a/deploy/frontend.sh b/deploy/frontend.sh
index aa0c275..b938254 100755
--- a/deploy/frontend.sh
+++ b/deploy/frontend.sh
@@ -28,11 +28,12 @@
   # If there was a rollback, `gcloud run deploy` will create a revision but
   # not point traffic to it. The following command ensures that the new revision
   # will get traffic.
-  gcloud run services update-traffic $env-frontend --to-latest
+  gcloud run services update-traffic $env-frontend --to-latest --region us-central1
   local tok=$(private/devtools/idtoken.sh $env)
   local hdr="Authorization: Bearer $tok"
   # Clear the redis cache
   curl -H "$hdr" $(worker_url $env)/clear-cache
+  private/devtools/warmups.sh $env $tok
 }
 
 main $@