* Check blocked ovn-chassis units with bad config LP bug#1919481 [0] needs to have a func-test to check if units can handle bad bridge-interface-mappings configuration and set units workload to block state and return to active state with good config. [0] https://bugs.launchpad.net/charm-ovn-chassis/+bug/1919481 * Changing test_wrong_bridge_config to use config_change Instead of using block_until_unit_wl_status, change the test_config to be able to check blocked state for ovn-chassis units Co-authored-by: Aurelien Lourot <aurelien.lourot@canonical.com>