adds test suite

app/helpers/services_helper.rb

app/models/project_services/asana_service.rb

app/models/project_services/assembla_service.rb

app/models/project_services/bamboo_service.rb

app/models/project_services/bugzilla_service.rb

app/models/project_services/buildkite_service.rb

app/models/project_services/builds_email_service.rb

app/models/project_services/campfire_service.rb

app/models/project_services/ci_service.rb

app/models/project_services/custom_issue_tracker_service.rb

app/models/project_services/emails_on_push_service.rb

app/models/project_services/external_wiki_service.rb

app/models/project_services/flowdock_service.rb

app/models/project_services/gemnasium_service.rb

app/models/project_services/hipchat_service.rb

app/models/project_services/irker_service.rb

app/models/project_services/jira_service.rb

app/models/project_services/kubernetes_service.rb

app/models/project_services/mattermost_service.rb

...els/project_services/mattermost_slash_commands_service.rb