Update Gemfile

Update the Gemfile to use the common helper gem that bundles all of the
common gem dependencies.

Change-Id: I8a2075a93494275bba296d39a8249cf0a4bf951a

Gemfile

@@ -1,30 +1,9 @@
 source 'https://rubygems.org'
 
-group :development, :test do
-  gem 'puppetlabs_spec_helper', :require => false
-
-  gem 'metadata-json-lint'
-  # This is nice and all, but let's not worry about it until we've actually
-  # got puppet 4.x sorted
-  # gem 'puppet-lint-param-docs'
-  gem 'puppet-lint-absolute_classname-check'
-  gem 'puppet-lint-absolute_template_path'
-  gem 'puppet-lint-trailing_newline-check'
-
-  # Puppet 4.x related lint checks
-  gem 'puppet-lint-unquoted_string-check'
-  gem 'puppet-lint-empty_string-check'
-  gem 'puppet-lint-leading_zero-check'
-  gem 'puppet-lint-variable_contains_upcase'
-  gem 'puppet-lint-spaceship_operator_without_tag-check'
-  gem 'puppet-lint-undef_in_function-check'
-
-  if puppetversion = ENV['PUPPET_GEM_VERSION']
-    gem 'puppet', puppetversion, :require => false
-  else
-    gem 'puppet', '~> 3.0', :require => false
-  end
-
+group :development, :test, :system_tests do
+  gem 'puppet-openstack_infra_spec_helper',
+      :git     => 'https://git.openstack.org/openstack-infra/puppet-openstack_infra_spec_helper',
+      :require => false
 end
 
 # vim:ft=ruby