* Fix vyos on network_cli on python3
bytes do not have format() in Python3
* Push connection to tasks, with bonus connection=local test
* Run tests without explicit connection set
* Add/update START messages where appropriate
* Run `save` before exiting config mode.
* Fix unit tests for `save`
* Allow `save` to be on its own again and introspect success
* Introspecting `compare running` makes this a lot harder.
Move `save` tests to integration tests