Add UpgradeLevelNovaCompute parameter

This parameter can be used for pinning (and later unpinning) the Nova
Compute RPC version.

Change-Id: I2f181f3b01f0b8059566d01db0152a12bbbd1c3e

environments/major-upgrade-pacemaker.yaml

@@ -1,3 +1,6 @@
+parameter_defaults:
+  UpgradeLevelNovaCompute: liberty
+
 resource_registry:
   OS::TripleO::Tasks::UpdateWorkflow: ../extraconfig/tasks/major_upgrade_pacemaker.yaml
   OS::TripleO::Tasks::PackageUpdate:  ../extraconfig/tasks/yum_update_noop.yaml

extraconfig/tasks/major_upgrade_controller_pacemaker_1.sh

@@ -49,7 +49,7 @@ done
 yum update -y
 
 # Pin messages sent to compute nodes to kilo, these will be upgraded later
-crudini  --set /etc/nova/nova.conf upgrade_levels compute liberty
+crudini  --set /etc/nova/nova.conf upgrade_levels compute "$upgrade_level_nova_compute"
 # https://bugzilla.redhat.com/show_bug.cgi?id=1284047
 # Change-Id: Ib3f6c12ff5471e1f017f28b16b1e6496a4a4b435
 crudini  --set /etc/ceilometer/ceilometer.conf DEFAULT rpc_backend rabbit

extraconfig/tasks/major_upgrade_pacemaker.yaml

@@ -16,7 +16,16 @@ parameters:
     type: json
     description: input values for the software deployments
 
+  UpgradeLevelNovaCompute:
+    type: string
+    description: Nova Compute upgrade level
+    default: ''
+
 resources:
+  # TODO(jistr): for Mitaka->Newton upgrades and further we can use
+  # map_merge with input_values instead of feeding params into scripts
+  # via str_replace on bash snippets
+
   ControllerPacemakerUpgradeConfig_Step1:
     type: OS::Heat::SoftwareConfig
     properties:
@@ -24,7 +33,13 @@ resources:
       config:
         list_join:
         - ''
-        - - get_file: pacemaker_common_functions.sh
+        - - str_replace:
+              template: |
+                #!/bin/bash
+                upgrade_level_nova_compute='UPGRADE_LEVEL_NOVA_COMPUTE'
+              params:
+                UPGRADE_LEVEL_NOVA_COMPUTE: {get_param: UpgradeLevelNovaCompute}
+          - get_file: pacemaker_common_functions.sh
           - get_file: major_upgrade_controller_pacemaker_1.sh
 
   ControllerPacemakerUpgradeDeployment_Step1: