Add Jenkins SSH key to proposal.slave.

Proposal.slave.openstack.org is used to push change proposals into
Gerrit. To do this the slave needs to have the Jenkins' private SSH key
installed. Make it so.

Change-Id: Id3106d3167da0569370000e3c1a724a88abbd245

manifests/site.pp

@@ -434,9 +434,10 @@ node 'devstack-launch02.slave.openstack.org' {
 node 'proposal.slave.openstack.org' {
   include openstack_project
   class { 'openstack_project::proposal_slave':
-    transifex_username     => 'openstackjenkins',
-    transifex_password     => hiera('transifex_password'),
-    jenkins_ssh_public_key => $openstack_project::jenkins_ssh_key,
+    transifex_username      => 'openstackjenkins',
+    transifex_password      => hiera('transifex_password'),
+    jenkins_ssh_public_key  => $openstack_project::jenkins_ssh_key,
+    jenkins_ssh_private_key => hiera('jenkins_ssh_private_key_contents'),
   }
 }
 

modules/openstack_project/manifests/proposal_slave.pp

@@ -5,6 +5,7 @@
 #
 class openstack_project::proposal_slave (
   $jenkins_ssh_public_key,
+  $jenkins_ssh_private_key,
   $transifex_password = '',
   $transifex_username = 'openstackci',
 ) {
@@ -27,4 +28,12 @@ class openstack_project::proposal_slave (
     content => template('openstack_project/transifexrc.erb'),
     require => User['jenkins'],
   }
+
+  file { '/home/jenkins/.ssh/id_rsa':
+    owner   => 'jenkins',
+    group   => 'jenkins',
+    mode    => '0400',
+    require => File['/home/jenkins/.ssh'],
+    content => $jenkins_ssh_private_key,
+  }
 }