Issue 3016 - Remove Nginx purging resource

modules/nginx/manifests/init.pp

 class nginx (
     $worker_processes = $nginx::params::worker_processes,
     $worker_connections = $nginx::params::worker_connections,
     $ssl_session_cache =  $nginx::params::ssl_session_cache,
     $geoip_country = undef,
     $geoip_city = undef,
   ) inherits nginx::params {
 
   apt::ppa {'ppa:nginx/stable':
   }
 
   apt::source {'nginx':
     ensure => 'absent',
   }
 
-  exec {'purge-nginx':
-    command => '/usr/bin/apt-get -y purge nginx',
-    logoutput => true,
-    path => '/usr/sbin:/usr/bin:/sbin:/bin',
-    refreshonly => true,
-    returns => [0, 100],
-    subscribe => Apt::Ppa['ppa:nginx/stable'],
-  }
-
   package {'nginx':
     ensure => '1.8.0-1+precise1',
-    require => Exec['purge-nginx'],
+    require => Apt::Ppa['ppa:nginx/stable'],
   }
 
   user {'nginx':
     ensure => 'present',
     require => Package['nginx'],
   }
 
   File {
     owner => root,
     group => root,
@@ skipping 149 matching lines @@
   }
 
   service {'nginx':
     ensure => running,
     enable => true,
     restart => '/etc/init.d/nginx reload',
     hasstatus => true,
     require => File['/etc/nginx/nginx.conf']
   }
 }