Populate query_plugins_info setting

There is a setting in jjb to enable/disable jenkins
querying plugins. Set this var on the template, defaulting
to True, that means Jenkins will always query plugins
by default.

Change-Id: Ie39090fce4ec01edde0cc99a35e1e9e1991cac98

manifests/job_builder.pp

@@ -8,6 +8,7 @@ class jenkins::job_builder (
   $git_url = 'https://git.openstack.org/openstack-infra/jenkins-job-builder',
   $config_dir = '',
   $jenkins_jobs_update_timeout = '600',
+  $query_plugins_info = True,
   $extensions = [],
 ) {
   validate_array($extensions)

templates/jenkins_jobs.ini.erb

@@ -2,6 +2,7 @@
 user=<%= @username %>
 password=<%= @password %>
 url=<%= @url %>
+query_plugins_info=<%= @query_plugins_info %>
 
 <% @extensions.each do |extension| -%>
 ["<%= extension['name'] %>"]