Add environment labels for deploy jobs

.gitlab-ci.yml

@@ -29,6 +29,9 @@ k8s-prod-deploy:
   when: manual
   only:
   - master
+  environment:
+    name: prod
+    url: https://rego.linux.conf.au
 
 build_ticket_image:
   image: docker:git
@@ -59,6 +62,9 @@ k8s-ticket-testing-deploy:
   when: manual
   only:
   - ticket-testing
+  environment:
+    name: staging
+    url: https://ticket-testing.lca2018.org
 
 pages:
   image: alpine
@@ -74,3 +80,6 @@ pages:
     - public
   only:
   - master
+  environment:
+    name: docs
+    url: https://lca2018.gitlab.io/symposion_app/