Fix osb selectors missing id solution 2

[EpsilonTal]

[Instance Sharing] Claim shared service instance by selectors

Approach

Fix missing referenced_instance_id when provisioning a reference with selectors on OSB flow. By re-write the request parameters after extracting the reference instance id with the selectors.

Pull Request status

• [x] Initial implementation
• [x] Refactoring
• [x] Unit tests
• [x] Integration tests