Add DockerDebug

Implement a mechanism to enable docker service debug logging.
If DockerDebug is unset defaults to the normal Debug parameter
setting.

Change-Id: I4f4627c7d8e90121c1262b2518b02989f5aaed18

puppet/services/docker.yaml

@@ -40,10 +40,21 @@ parameters:
     default: {}
     description: Parameters specific to the role
     type: json
+  Debug:
+    type: boolean
+    default: false
+    description: Set to True to enable debugging on all services.
+  DockerDebug:
+    default: ''
+    description: Set to True to enable debugging Docker services.
+    type: string
+    constraints:
+      - allowed_values: [ '', 'true', 'True', 'TRUE', 'false', 'False', 'FALSE']
 
 conditions:
   insecure_registry_is_empty: {equals : [{get_param: DockerInsecureRegistryAddress}, []]}
   insecure_registry_mirror_is_empty: {equals : [{get_param: DockerRegistryMirror}, '']}
+  service_debug_unset: {equals : [{get_param: DockerDebug}, '']}
 
 outputs:
   role_data:
@@ -54,6 +65,11 @@ outputs:
         map_merge:
           - tripleo::profile::base::docker::configure_network: true
             tripleo::profile::base::docker::network_options: "--bip=172.31.0.1/24"
+            tripleo::profile::base::docker::debug:
+              if:
+                - service_debug_unset
+                - {get_param: Debug }
+                - {get_param: DockerDebug}
           -
             if:
             - insecure_registry_is_empty