Merge pull request #47459 from gtmanfred/2017.7

update ubuntu-rolling to 18.04

.kitchen.yml

@@ -92,12 +92,9 @@ platforms:
         - yum install -y upstart
     provisioner:
       salt_bootstrap_options: -P -p rsync -y -x python2.7 -X git v<%= version %> >/dev/null
-  - name: ubuntu-rolling
+  - name: ubuntu-18.04
     driver_config:
-      image: ubuntu:rolling
       run_command: /lib/systemd/systemd
-    provisioner:
-      salt_bootstrap_url: https://raw.githubusercontent.com/saltstack/salt-bootstrap/develop/bootstrap-salt.sh
   - name: ubuntu-16.04
     driver_config:
       run_command: /lib/systemd/systemd