fix rspec ./ee/spec/services/security/security_orchestration_policies/ci_configuration_service_spec.rb:95

Job #1578426486 failed for ca2d84a6:

Related issue !90 (merged)

Backgroud

ci job failed since upstream registry url hard code in spec tests, now we need to fix it to unblock jh pipeline.

Solution

Add a new method in Gitlab::Saas named registry_prefix so that it can compatible both upstream and jh.

See MR !92 (merged)