Set enable on agent service

This sets the enable flag on the agent service which will autostart the
agent (if set) on reboot. Also this removes a non-sensical parameter on
a file resource that appears to be a typo.

Change-Id: I5b49a276e89b88aefc9bf6ec0c22e6e18fa1cc26

manifests/agent.pp

@@ -255,7 +255,6 @@ class monasca::agent(
 
   $log_dir = "${::monasca::log_dir}/agent"
   file { "${agent_dir}/supervisor.conf":
-    ensure  => $ensure,
     owner   => 'root',
     group   => 'root',
     mode    => '0644',
@@ -271,6 +270,7 @@ class monasca::agent(
 
   service { 'monasca-agent':
     ensure => $ensure,
+    enable => $enabled,
     name   => $::monasca::params::agent_service,
   }
 }