Use a previous approach for cycle analytics dummy pipeline

spec/models/project_spec.rb

@@ -1523,7 +1523,7 @@ describe Project, models: true do
       expect(project.ci_config_path).to eq('foo/.gitlab_ci.yml')
     end
 
-    it 'sets a string but remove all leading slashes and null characters' do
+    it 'sets a string but removes all leading slashes and null characters' do
       project.update!(ci_config_path: "///f\0oo/\0/.gitlab_ci.yml")
 
       expect(project.ci_config_path).to eq('foo//.gitlab_ci.yml')

spec/support/cycle_analytics_helpers.rb

@@ -74,10 +74,9 @@ module CycleAnalyticsHelpers
 
   def dummy_pipeline
     @dummy_pipeline ||=
-      project.pipelines.build(
+      Ci::Pipeline.new(
         sha: project.repository.commit('master').sha,
-        ref: 'master',
-        source: :push)
+        project: project)
   end
 
   def new_dummy_job(environment)