Add parameter for enabling purging configuration files

This patch adds a parameter, EnableConfigPurge, to the base nova and
neutron service files. The value is passed to their respective puppet
modules to control whether resources not managed by puppet are purged
from the config files. The default value is set to true.

Change-Id: I32732dc2ed7a7b3187e8727592cb4add0c6b9cf6
Closes-Bug:  #1611800

2 files changed, 14 insertions, 0 deletions

diff --git a/puppet/services/neutron-base.yaml b/puppet/services/neutron-base.yaml
index f6339c83..bc8dd8d1 100644
--- a/puppet/services/neutron-base.yaml
+++ b/puppet/services/neutron-base.yaml
@@ -42,6 +42,12 @@ parameters:
     type: string
     default: ''
     description: Set to True to enable debugging on all services.
+  EnableConfigPurge:
+    type: boolean
+    default: true
+    description: >
+        Remove configuration that is not generated by TripleO. Setting
+        to false may result in configuration remnants after updates/upgrades.
 
 outputs:
   role_data:
@@ -61,6 +67,7 @@ outputs:
             params:
               PLUGINS: {get_param: NeutronServicePlugins}
         neutron::debug: {get_param: Debug}
+        neutron::purge_config: {get_param: EnableConfigPurge}
         neutron::allow_overlapping_ips: true
         neutron::rabbit_heartbeat_timeout_threshold: 60
         neutron::host: '"%{::fqdn}"'    #NOTE: extra quoting is needed
diff --git a/puppet/services/nova-base.yaml b/puppet/services/nova-base.yaml
index 5bc94b2b..90788144 100644
--- a/puppet/services/nova-base.yaml
+++ b/puppet/services/nova-base.yaml
@@ -39,6 +39,12 @@ parameters:
     type: string
     default: ''
     description: Set to True to enable debugging on all services.
+  EnableConfigPurge:
+    type: boolean
+    default: true
+    description: >
+        Remove configuration that is not generated by TripleO. Setting
+        to false may result in configuration remnants after updates/upgrades.
 
 outputs:
   role_data:
@@ -83,6 +89,7 @@ outputs:
           - '%'
           - "%{hiera('mysql_bind_host')}"
         nova::debug: {get_param: Debug}
+        nova::purge_config: {get_param: EnableConfigPurge}
         nova::network::neutron::neutron_project_name: 'service'
         nova::network::neutron::neutron_username: 'neutron'
         nova::network::neutron::dhcp_domain: ''