Add support to rsync fixtures into SUTs

lib/beaker_puppet_helpers/module_utils.rb

@@ -56,5 +56,26 @@ def install_local_module_on(hosts, source = '.')
         File.unlink(source_path) if source_path
       end
     end
+
+    # Copies all local dependencies into a SUT via rsync+ssh
+    #
+    # install_local_module_on creates an archive, scps it and then unpack it.
+    # That takes up a lot of time when you've many modules. rsync+ssh is a faster alternative,
+    # but it requires rsync in the SUT and on the Host.
+    # Use the spec_prep rake task to deploy the dependencies locally.
+    #
+    # @param [Beaker::Host, Array<Beaker::Host>, String, Symbol] hosts
+    #   One or more hosts to act upon, or a role (String or Symbol) that
+    #   identifies one or more hosts.
+    # @param [String] source
+    #   The directory where the modules sit
+    # @param [String] destination
+    #   The directory where the modules will be placed
+    def install_puppet_modules_via_rsync(hosts, source = 'spec/fixtures/modules/', destination = '/etc/puppetlabs/code/environments/production/modules')
+      real_source = File.realpath(source)
+      block_on hosts do |host|
+        host.do_rsync_to(real_source, destination)
+      end
+    end
   end
 end