fix: add mocha gem

Author: TheMeier

.sync.yml

@@ -3,3 +3,7 @@ spec/spec_helper.rb:
   mock_with: ':mocha'
 spec/spec_helper_acceptance.rb:
   unmanaged: false
+Gemfile:
+  optional:
+    ':test':
+      - gem: 'mocha'

Gemfile

@@ -4,6 +4,7 @@
 source ENV['GEM_SOURCE'] || 'https://rubygems.org'
 
 group :test do
+  gem 'mocha',                      :require => false
   gem 'voxpupuli-test', '~> 11.0',  :require => false
   gem 'puppet_metadata', '~> 5.0',  :require => false
 end