tests: fix implicit config file and recently added logic error

tests: fix implicit config file and recently added logic error

- Restore default of looking for a daemon config underneath the router directory
if no config file was specified.
- Recent change for adding unified config support had a logic bug, fix
- Update the one test that conflicted with this default
- comment out asyncio option causing warnings if asyncio wasn't installed.

Signed-off-by: Christian Hopps <chopps@labn.net>