Fix ordering issue related to swift.conf

The file /etc/swift/swift.conf is managed by puppet.
There is no ordering contraint between swift_config resource and the
/etc/swift/swift.conf file resource.

It causes randomly failure when the swift_config resource applies before
the file resource

Change-Id: I08803a68ede6e3659e93c342949d8bb4e823ccd9

manifests/init.pp

@@ -37,6 +37,8 @@ class swift(
 
   include ::swift::params
 
+  File['/etc/swift/swift.conf'] -> Swift_config <||>
+
   if !defined(Package['swift']) {
     package { 'swift':
       ensure => $package_ensure,