Deployments can´t access other deployments that belong to other users in the same team

**Describe the bug**
We tried connecting keycloak to our postgres-deployment and frontend and it did not work. One user in our team had ownership of thepostgres-db-deployment and one user had ownership of the keycloak-deployment. When we transfered the ownership of the keycloak-deployment to the user with the postgres-db we finally got everything with keycloak to work.

**To Reproduce**
Steps to reproduce the behavior:
be 2 users in a team
one user creates a postgres-deployment
one user creates a keycloak-deployment
try to connect keycloak to the postgres-deployment
if it does´nt work, transfer ownership of the keycloak or the postgres-deployment to the other user

**Expected behavior**
Keycloak should be able to connect to the postgres-deployment if users in the same team share deployments.

Start by reproducing the issue with two users in one team, creating separate PostgreSQL and Keycloak deployments, and attempting the connection. Trace how deployment ownership and same-team access are handled; done means deployments owned by different users in the same team can connect without transferring ownership.

Written by the indexing model from the issue text.