Avoid hard-coding OS user/group in each manifest

and replace hard-codes by definition in params.pp .

Change-Id: I808f2c8bb4b8222b03c96faf400fb0a439dc31cd

manifests/db/sync.pp

@@ -26,10 +26,11 @@ class trove::db::sync(
 ) {
 
   include trove::deps
+  include trove::params
 
   exec { 'trove-manage db_sync':
     path        => '/usr/bin',
-    user        => 'trove',
+    user        => $::trove::params::user,
     refreshonly => true,
     try_sleep   => 5,
     tries       => 10,

manifests/params.pp

@@ -6,6 +6,7 @@ class trove::params {
   include openstacklib::defaults
 
   $client_package_name = 'python3-troveclient'
+  $user                = 'trove'
   $group               = 'trove'
 
   case $::osfamily {