Add a dedicated slave to launch devstack nodes.

So that we can take this load off of the jenkins master.

Change-Id: Id66efede75fab9977013e69f3415a53dc239b0ce
Reviewed-on: https://review.openstack.org/22379
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Approved: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins

manifests/site.pp

@@ -235,6 +235,11 @@ node /^ci-backup-.*\.openstack\.org$/ {
 # Jenkins slaves:
 #
 
+node 'devstack-launch.slave.openstack.org' {
+  class { 'openstack_project::devstack_launch_slave':
+  }
+}
+
 node 'tx.slave.openstack.org' {
   class { 'openstack_project::translation_slave':
     transifex_username => 'openstackjenkins',

modules/openstack_project/manifests/devstack_launch_slave.pp

@@ -0,0 +1,15 @@
+# == Class: openstack_project::devstack_launch_slave
+#
+class openstack_project::devstack_launch_slave (
+) {
+
+  class { 'openstack_project::slave':
+    bare => true,
+  }
+
+  package { ['python-novaclient', 'statsd', 'paramiko']:
+    ensure   => latest,
+    provider => pip,
+    require  => Class['pip'],
+  }
+}

modules/openstack_project/manifests/slave.pp

@@ -1,6 +1,7 @@
 # == Class: openstack_project::slave
 #
 class openstack_project::slave (
+  $bare = false,
   $certname = $::fqdn,
   $sysadmins = []
 ) {
@@ -13,6 +14,7 @@ class openstack_project::slave (
     sysadmins                 => $sysadmins,
   }
   class { 'jenkins::slave':
+    bare    => $bare,
     ssh_key => $openstack_project::jenkins_ssh_key,
   }
   class { 'salt':