[feat] decouple ldap calls to facilitate dev

[stolpeo]

What is your feature request?

LDAP calls are tightly coupled to the ADs. This prohibits proper local development. Decouple the LDAP calls and put them into an layer in between so they can be replaced, depending on the environment (i.e. in production they should call the actual ldap, in development they should return dummy data as well as in tests).

Have you seen anything similar somewhere else?

No response

[stolpeo]

Not really necessary. we can create local users and run by that. Also the LDAP can easily be mocked as the LDAP module provides a dummy server that can return user defined data.