DBforPostgreSQL User can only be assigned lowercase roles

[Paul-B98]

Describe the current behavior It seems that the current behaviour only allows the assignment of roles that are written in lowercase to a user. This results in an error that the corresponding role cannot be found when deviating from lowercase lettering. A testcase to reproduce this behaviour is to add uppercase letters or hyphens to the name of the admin role. When creating a new user that role should be assignable but is not.

Describe the improvement It would be helpful if there is a way to also allow the assignment of roles that contains letter in uppercase or hyphens.