Added recent version of npm to release slave

This patch clears the previous npm cleanup steps, and then
uses the npmjs module installed on the release slave to
manage the nodejs install. It installs node 0.12.7 and
pm version 2.11.3. It also updates the .npmrc file for
our jenkins user, forcing each `npm version` command to sign
the generated version git tag (sign-git-tag), and override
the npm default version prefix ('v') to openstack's ('').

Change-Id: Id4bd49329db25d62a06a57b665945dc351450198

modules/openstack_project/manifests/release_slave.pp

@@ -53,25 +53,17 @@ class openstack_project::release_slave (
     require  => Class['pip'],
   }
 
-  exec { 'uninstall /usr/local/bin/npm':
-    command => 'npm uninstall npm --prefix=/usr/local -g',
-    onlyif  => 'test -d /usr/local/lib/node_modules',
-    path    => '/usr/local/bin:/usr/bin',
+  class { '::nodejs':
+    repo_url_suffix => 'node_0.12',
   }
 
-  package { ['npm', 'nodejs', 'nodejs-legacy']:
-    ensure  => purged,
-    require => Exec['uninstall /usr/local/bin/npm'],
-  }
-
-  file { ['/usr/share/npm',
-    '/usr/lib/node_modules',
-    '/root/.npm',
-    '/etc/npmrc',
-    '/home/jenkins/.npmrc']:
-    ensure  => absent,
-    force   => true,
-    require => Package['npm']
+  file { '/home/jenkins/.npmrc':
+    ensure  => present,
+    owner   => 'jenkins',
+    group   => 'jenkins',
+    mode    => '0600',
+    content => template('openstack_project/npmrc.erb'),
+    require => File['/home/jenkins'],
   }
 
   file { '/home/jenkins/.pypirc':

modules/openstack_project/templates/npmrc.erb

@@ -4,6 +4,8 @@
 init.author.name=<%= jenkins_gitfullname %>
 init.author.email=<%= jenkins_gitemail %>
 init.author.url=<%= npm_userurl %>
+tag-version-prefix=
+sign-git-tag=true
 
 //registry.npmjs.org/:username=<%= npm_username %>
 //registry.npmjs.org/:_password=<%= Base64.encode64(npm_userpassword) %>