Merge pull request 'OZG-3880 network-policy add incoming from vorgangmanager,...

Merge pull request 'OZG-3880 network-policy add incoming from vorgangmanager, add additionalRules' (#97) from OZG-3880-add-incoming-network-policy-vorgang-manager into master

Reviewed-on: https://git.ozg-sh.de/ozgcloud-app/user-manager/pulls/97