Subscribe cgrulesengd to the file changes

This commit fix behavior when new processes aren't catched by
Control Groups Engine Daemon.

Change-Id: I1a5d5eaa15e1f3f52a97793ae6f69704d893a630
Closes-bug: #1558432

deployment/puppet/cgroups/.gitignore

@@ -0,0 +1 @@
+spec/fixtures

deployment/puppet/cgroups/.rspec

@@ -0,0 +1,2 @@
+-f doc
+-c

deployment/puppet/cgroups/manifests/init.pp

@@ -17,7 +17,8 @@ class cgroups(
   inherits cgroups::params
 {
   validate_hash($cgroups_set)
-  ensure_packages($packages)
+  ensure_packages($packages, { tag => 'cgroups' })
+
 
   File {
     ensure => file,
@@ -28,20 +29,36 @@ class cgroups(
 
   file { '/etc/cgconfig.conf':
     content => template('cgroups/cgconfig.conf.erb'),
+    tag     => 'cgroups',
   }
 
   file { '/etc/cgrules.conf':
     content => template('cgroups/cgrules.conf.erb'),
+    tag     => 'cgroups',
   }
 
   class { '::cgroups::service':
     cgroups_settings => $cgroups_set,
   }
 
-  Package<||> ->
-  File<||> ->
+  File <| tag == 'cgroups' |> ~>
+  Service['cgrulesengd']
+
+  Package <| tag == 'cgroups' |> ~>
+  Service['cgrulesengd']
+
+  Package <| tag == 'cgroups' |> ->
+  File <| tag == 'cgroups' |>
+
+  File <| tag == 'cgroups' |> ->
+  Service['cgroup-lite']
+
   Service['cgroup-lite'] ->
+  Service['cgconfigparser']
+
   Service['cgconfigparser'] ->
-  Cgclassify<||> ->
+  Cgclassify <||>
+
+  Cgclassify <||> ->
   Service['cgrulesengd']
 }

deployment/puppet/cgroups/spec/classes/cgroups_init_spec.rb

@@ -15,6 +15,7 @@ describe 'cgroups', :type => :class do
         :owner   => 'root',
         :group   => 'root',
         :mode    => '0644',
+        :tag     => 'cgroups',
       }
     end
 
@@ -31,9 +32,8 @@ describe 'cgroups', :type => :class do
     end
 
     %w(/etc/cgconfig.conf /etc/cgrules.conf).each do |cg_file|
-      it { is_expected.to contain_file(cg_file).with(
-        file_defaults
-      ) }
+      it { is_expected.to contain_file(cg_file).that_notifies('Service[cgrulesengd]').with(file_defaults) }
+      it { p catalogue.resource 'file', cg_file }
     end
   end
 end