fixes the test suite for the service api file

app/models/project_services/jenkins_deprecated_service.rb

@@ -33,7 +33,7 @@ class JenkinsDeprecatedService < CiService
     'is deprecated. Use "Jenkins CI" service instead.'
   end
 
-  def to_param
+  def self.to_param
     'jenkins_deprecated'
   end
 

app/models/project_services/jenkins_service.rb

@@ -52,7 +52,7 @@ class JenkinsService < CiService
     File.join(jenkins_url, "project/#{project_name}").to_s
   end
 
-  def supported_events
+  def self.supported_events
     %w(push merge_request tag_push)
   end
 
@@ -68,7 +68,7 @@ class JenkinsService < CiService
     'You must have installed the Git Plugin and GitLab Plugin in Jenkins'
   end
 
-  def to_param
+  def self.to_param
     'jenkins'
   end
 

lib/api/services.rb

@@ -609,6 +609,8 @@ module API
       SlackService,
       MattermostService,
       TeamcityService,
+      JenkinsService,
+      JenkinsDeprecatedService
     ].freeze
 
     trigger_services = {