Update the Anchor pattern workaround

Add a step to the anchor pattern and add comment to clarify the need of this workaround.
Ref : http://docs.puppetlabs.com/puppet/2.7/reference/lang_containment.html#known-issues

Author: Bit-Doctor

manifests/client.pp

@@ -20,7 +20,10 @@
   anchor { 'mysql::client::start': }
   anchor { 'mysql::client::end': }
 
+  # Anchor pattern workaround to avoid resources of mysql::client::install 
+  # to "float off" outside mysql::client
   Anchor['mysql::client::start'] ->
+  Class['mysql::client'] ->
   Class['mysql::client::install'] ->
   Anchor['mysql::client::end']