Add foreman_ovirt plugin to installer

(cherry picked from commit fe5cdfd)

Author: nadjaheitmann

manifests/plugin/ovirt.pp

@@ -0,0 +1,5 @@
+# = Foreman oVirt plugin
+class foreman::plugin::ovirt {
+  foreman::plugin { 'ovirt':
+  }
+}

spec/classes/plugin/ovirt_spec.rb

@@ -0,0 +1,5 @@
+require 'spec_helper'
+
+describe 'foreman::plugin::ovirt' do
+  include_examples 'basic foreman plugin tests', 'ovirt'
+end