Rename packagist integration from service

Renames project association from packagist_service to
packagist_integration.

app/models/integration.rb

@@ -48,6 +48,7 @@ class Integration < ApplicationRecord
     flowdock
     hangouts_chat
     irker
+    packagist
   ].to_set.freeze
 
   def self.renamed?(name)

app/models/project.rb

@@ -178,7 +178,7 @@ class Project < ApplicationRecord
   has_one :mattermost_slash_commands_service, class_name: 'Integrations::MattermostSlashCommands'
   has_one :microsoft_teams_service, class_name: 'Integrations::MicrosoftTeams'
   has_one :mock_ci_service, class_name: 'Integrations::MockCi'
-  has_one :packagist_service, class_name: 'Integrations::Packagist'
+  has_one :packagist_integration, class_name: 'Integrations::Packagist'
   has_one :pipelines_email_service, class_name: 'Integrations::PipelinesEmail'
   has_one :pivotaltracker_service, class_name: 'Integrations::Pivotaltracker'
   has_one :pushover_service, class_name: 'Integrations::Pushover'

spec/lib/gitlab/import_export/all_models.yml

@@ -371,7 +371,7 @@ project:
 - mattermost_slash_commands_service
 - slack_slash_commands_service
 - irker_integration
-- packagist_service
+- packagist_integration
 - pivotaltracker_service
 - prometheus_service
 - flowdock_integration

spec/models/integrations/packagist_spec.rb

@@ -33,14 +33,14 @@ RSpec.describe Integrations::Packagist do
     let(:user)    { create(:user) }
     let(:project) { create(:project, :repository) }
     let(:push_sample_data) { Gitlab::DataBuilder::Push.build_sample(project, user) }
-    let(:packagist_service) { described_class.create!(packagist_params) }
+    let(:packagist_integration) { described_class.create!(packagist_params) }
 
     before do
       stub_request(:post, packagist_hook_url)
     end
 
     it 'calls Packagist API' do
-      packagist_service.execute(push_sample_data)
+      packagist_integration.execute(push_sample_data)
 
       expect(a_request(:post, packagist_hook_url)).to have_been_made.once
     end

spec/models/project_spec.rb

@@ -41,7 +41,7 @@ RSpec.describe Project, factory_default: :keep do
     it { is_expected.to have_one(:hangouts_chat_integration) }
     it { is_expected.to have_one(:unify_circuit_service) }
     it { is_expected.to have_one(:webex_teams_service) }
-    it { is_expected.to have_one(:packagist_service) }
+    it { is_expected.to have_one(:packagist_integration) }
     it { is_expected.to have_one(:pushover_service) }
     it { is_expected.to have_one(:asana_integration) }
     it { is_expected.to have_many(:boards) }