Merge "Allow to send optional values to configuration"

manifests/init.pp

@@ -4,6 +4,7 @@ class pip (
   $index_url = 'https://pypi.python.org/simple',
   $trusted_hosts = [],
   $manage_pip_conf = false,
+  $optional_settings = {},
 ) {
   include ::pip::params
   validate_array($trusted_hosts)

templates/pip.conf.erb

@@ -6,3 +6,7 @@ trusted-host =
   <%= trusted_host %>
 <% end -%>
 <% end -%>
+
+<% @optional_settings.keys.sort.each do |setting| -%>
+<%= setting -%> = <%= @optional_settings[setting] %>
+<% end -%>