squash! Add specs for EE AlertsService

ee/spec/models/project_services/alerts_service_spec.rb

@@ -22,6 +22,7 @@ RSpec.describe AlertsService do
               ['https://appname.app.opsgenie.com/alert/list', true],
               ['https://example.com', true],
               ['http://example.com', true],
+              ['http://0.0.0.0', false],
               ['http://127.0.0.1', false],
               ['ftp://example.com', false],
               ['invalid url', false]