Add upgrade support for Horizon

Change-Id: I91c3c93c1571288daa78b6d24b0aa9824a2bb5c4

ci/environments/multinode_major_upgrade.yaml

@@ -45,6 +45,7 @@ parameter_defaults:
     - OS::TripleO::Services::NovaCompute
     - OS::TripleO::Services::NovaLibvirt
     - OS::TripleO::Services::Pacemaker
+    - OS::TripleO::Services::Horizon
   ControllerExtraConfig:
     nova::compute::libvirt::services::libvirt_virt_type: qemu
     nova::compute::libvirt::libvirt_virt_type: qemu

puppet/services/horizon.yaml

@@ -96,3 +96,19 @@ outputs:
           - horizon::django_debug: {get_param: Debug}
       step_config: |
         include ::tripleo::profile::base::horizon
+      # Ansible tasks to handle upgrade
+      upgrade_tasks:
+        - name: Check if httpd is deployed
+          command: systemctl is-enabled httpd
+          tags: step0,validation
+          ignore_errors: True
+          register: httpd_enabled
+        - name: "PreUpgrade step0,validation: Check if httpd is running"
+          shell: >
+            /usr/bin/systemctl show 'httpd' --property ActiveState |
+            grep '\bactive\b'
+          when: httpd_enabled.rc == 0
+          tags: step0,validation
+        - name: Stop Horizon (under httpd)
+          tags: step2
+          service: name=httpd state=stopped