Nova RPC unpinning

During upgrades, we only run Puppet on the whole deployment to converge
the state, after the upgrade workflow itself has been fully
completed. That is an opportunity to utilize Puppet to make sure Nova
Compute RPC doesn't remain pinned to the older version.

Change-Id: I6ebc813a80dfd9dfbbb213c38724487e044507b8

environments/major-upgrade-pacemaker-converge.yaml

@@ -0,0 +1,2 @@
+parameter_defaults:
+  UpgradeLevelNovaCompute: ''

puppet/compute.yaml

@@ -267,6 +267,10 @@ parameters:
     description: The user password for SNMPd with readonly rights running on all Overcloud nodes
     type: string
     hidden: true
+  UpgradeLevelNovaCompute:
+    type: string
+    description: Nova Compute upgrade level
+    default: ''
   EnablePackageInstall:
     default: 'false'
     description: Set to true to enable package installation via Puppet
@@ -465,6 +469,7 @@ resources:
                 nova::rabbit_password: {get_input: rabbit_password}
                 nova::rabbit_use_ssl: {get_input: rabbit_client_use_ssl}
                 nova::rabbit_port: {get_input: rabbit_client_port}
+                nova::upgrade_level_compute: {get_input: upgrade_level_nova_compute}
                 nova_compute_driver: {get_input: nova_compute_driver}
                 nova::compute::libvirt::libvirt_virt_type: {get_input: nova_compute_libvirt_type}
                 nova::compute::neutron::libvirt_vif_driver: {get_input: nova_compute_libvirt_vif_driver}
@@ -549,6 +554,7 @@ resources:
         nova_vnc_proxyclient_address: {get_attr: [NetIpMap, net_ip_map, {get_param: [ServiceNetMap, NovaVncProxyNetwork]}]}
         nova_ovs_bridge: {get_param: NovaOVSBridge}
         nova_security_group_api: {get_param: NovaSecurityGroupAPI}
+        upgrade_level_nova_compute: {get_param: UpgradeLevelNovaCompute}
         ceilometer_metering_secret: {get_param: CeilometerMeteringSecret}
         ceilometer_password: {get_param: CeilometerPassword}
         ceilometer_compute_agent: {get_param: CeilometerComputeAgent}

puppet/controller.yaml

@@ -644,6 +644,10 @@ parameters:
     default: 'UTC'
     description: The timezone to be set on controller nodes.
     type: string
+  UpgradeLevelNovaCompute:
+    type: string
+    description: Nova Compute upgrade level
+    default: ''
   VirtualIP: # DEPRECATED: use per service settings instead
     type: string
     default: ''  # Has to be here because of the ignored empty value bug
@@ -1122,6 +1126,7 @@ resources:
               - '@'
               - {get_param: MysqlVirtualIP}
               - '/nova_api'
+        upgrade_level_nova_compute: {get_param: UpgradeLevelNovaCompute}
         instance_name_template: {get_param: InstanceNameTemplate}
         fencing_config: {get_param: FencingConfig}
         pcsd_password: {get_param: PcsdPassword}
@@ -1477,6 +1482,7 @@ resources:
                 nova::rabbit_password: {get_input: rabbit_password}
                 nova::rabbit_use_ssl: {get_input: rabbit_client_use_ssl}
                 nova::rabbit_port: {get_input: rabbit_client_port}
+                nova::upgrade_level_compute: {get_input: upgrade_level_nova_compute}
                 nova::debug: {get_input: debug}
                 nova::api::auth_uri: {get_input: keystone_auth_uri}
                 nova::api::identity_uri: {get_input: keystone_identity_uri}