Added AFS keytab to wheel slave

This adds a hiera-loaded keytab for the wheel slaves. It may
be used when writing wheels to the AFS share directory.

Note: This will require the creation of a keytab for the
wheel mirror, as well as appropriate folders and access rights
on AFS.

Change-Id: I81c39d420d8ac70def57949ea0d4c323b8797086

manifests/site.pp

@@ -1136,9 +1136,11 @@ node 'codesearch.openstack.org' {
 node /.*wheel-mirror-.*\.openstack\.org/ {
   $group = 'wheel-mirror'
   include openstack_project
+
   class { 'openstack_project::wheel_mirror_slave':
     sysadmins                      => hiera('sysadmins', []),
     jenkins_ssh_public_key         => $openstack_project::jenkins_ssh_key,
+    wheel_keytab                   => hiera("wheel_keytab"),
   }
 }
 

modules/openstack_project/manifests/wheel_mirror_slave.pp

@@ -21,7 +21,18 @@ class openstack_project::wheel_mirror_slave (
   $sysadmins = [],
   $jenkins_gitfullname = 'OpenStack Jenkins',
   $jenkins_gitemail = 'jenkins@openstack.org',
+  $wheel_keytab = undef,
 ) {
+
+  if( $wheel_keytab ) {
+    file { "/etc/wheel.keytab":
+      owner   => 'root',
+      group   => 'root',
+      mode    => '0400',
+      content => $wheel_keytab,
+    }
+  }
+
   class { 'openstack_project::slave':
     sysadmins           => $sysadmins,
     ssh_key             => $jenkins_ssh_public_key,