[management] Impossible to create Cache Policy

[insertmike]

With the 3.3.0 Release of gravitee it is no longer possible to create cache policy.

Server-side the response from server when attempting to create a policy is:

"{
"message" : "Invalid policy configuration : instance value (\"Cache Name\") not found in enum (possible values: [])",
"http_status" : 400
}"

UI-Side there is an empty dropdown which shows the list of possible options: [].

Possible Solution

Make the cache name to be submitted by the user, not selected from enum list. Revert the cache code from 3.2.X

Steps to Reproduce (for bugs)

1. Attempt to create a cache policy.

Your Environment

• Gravitee Version used: 3.3.0