Set show_diff to false for auth_file

We should not show changes in output since
the password might be leaked there.

I will add a follow-up patch later in master
that cleans up testing and etc.

We need to backport this to all versions.

Change-Id: Ief909c8303d7d29dcd0c19ee4cb4974667eadbcb
(cherry picked from commit 1c072a304e)

manifests/auth_file.pp

@@ -126,10 +126,11 @@ class openstack_extras::auth_file(
     fail('You must specify a password for openstack_extras::auth_file')
   }
   file { $path:
-    owner   => 'root',
-    group   => 'root',
-    mode    => '0700',
-    tag     => ['openrc'],
-    content => template('openstack_extras/openrc.erb')
+    owner     => 'root',
+    group     => 'root',
+    mode      => '0700',
+    show_diff => false,
+    tag       => ['openrc'],
+    content   => template('openstack_extras/openrc.erb')
   }
 }