Load puppet-openstack_spec_helper locally during tests

Change-Id: I85521a15476abb50a3007b241c658e3f278be142
Co-Authored-By: Mohammed Naser <mnaser@vexxhost.com>

Gemfile

@@ -1,7 +1,15 @@
 source ENV['GEM_SOURCE'] || "https://rubygems.org"
 
 group :development, :test, :system_tests do
-  gem 'puppet-openstack_spec_helper', :require => 'false', :git => 'https://git.openstack.org/openstack/puppet-openstack_spec_helper'
+  if ENV['ZUUL_PROJECT'] == 'openstack/puppet-openstack_spec_helper'
+    gem 'puppet-openstack_spec_helper',
+        :path => '../..',
+        :require => 'false'
+  else
+    gem 'puppet-openstack_spec_helper',
+        :git => 'https://git.openstack.org/openstack/puppet-openstack_spec_helper',
+        :require => 'false'
+  end
 end
 
 if facterversion = ENV['FACTER_GEM_VERSION']