Add use_usm parameter to dcorch.conf

Add use_usm parameter to /etc/dcorch/dcorch.conf to be used
in a switch to choose between the usm and patching api. Once the usm
is fully integrated, this parameter will be removed.

Test Case:
Apply the change and restart the system controller and
ensure use_usm parameter is in /etc/dcorch/dcorch.conf

Story: 2010676
Task: 48610

Change-Id: I9ff6e3a7c5eaef81e0d6c9ca7529fe4c278275bc
Signed-off-by: Christopher Souza <Christopher.DeOliveiraSouza@windriver.com>

modules/puppet-dcmanager/src/dcmanager/manifests/init.pp

@@ -21,6 +21,7 @@
 
 # TODO(kmacleod): playbook_timeout should be exposed to persist and modify
 #                 via 'system service-parameter...'
+# TODO(cdeolive): remove use_usm parameter when usm is fully integrated
 class dcmanager (
   $database_connection         = '',
   $database_idle_timeout       = 3600,

modules/puppet-dcorch/src/dcorch/manifests/init.pp

@@ -59,6 +59,7 @@ class dcorch (
   $usm_remote_port             = 5497,
   $identity_bind_port          = 25000,
   $identity_remote_port        = 5000,
+  $use_usm                     = false
 ) {
 
   include dcorch::params
@@ -101,6 +102,11 @@ class dcorch (
     'DEFAULT/api_paste_config':    value => $api_paste_config;
   }
 
+# TODO(cdeolive): remove this parameter when usm is fully integrated
+  dcorch_config {
+    'DEFAULT/use_usm':             value => $use_usm;
+  }
+
   # Automatically add psycopg2 driver to postgresql (only does this if it is missing)
   $real_connection = regsubst($database_connection,'^postgresql:','postgresql+psycopg2:')