feat: allow verification task to set just a pact_helper without a URI

Author: bethesque

lib/pact/tasks/verification_task.rb

@@ -31,6 +31,7 @@ class VerificationTask < ::Rake::TaskLib
     attr_reader :pact_spec_configs
     attr_accessor :rspec_opts
     attr_accessor :ignore_failures
+    attr_accessor :_pact_helper
 
     def initialize(name)
       @rspec_opts = nil
@@ -41,6 +42,10 @@ def initialize(name)
       rake_task
     end
 
+    def pact_helper(pact_helper)
+      @pact_spec_configs << { pact_helper: pact_helper }
+    end
+
     def uri(uri, options = {})
       @pact_spec_configs << {uri: uri, pact_helper: options[:pact_helper]}
     end
@@ -82,6 +87,7 @@ def rake_task
           Pact::TaskHelper.handle_verification_failure do
             exit_statuses.count{ | status | status != 0 }
           end
+
         end
       end
     end