* Allign MGMT Rest APIs -> return 204 NO_CONTENT w/o body where success w/o body is intended # Conflicts: # hawkbit-mgmt/hawkbit-mgmt-api/src/main/java/org/eclipse/hawkbit/mgmt/rest/api/MgmtTargetTagRestApi.java * Fix File download wrong no_content, Fix Tests * Fix ApiResponses where missed 200->204 --------- Co-authored-by: vasilchev <vasil.ilchev@bosch.com>