Wafl RPC Invoke to allow hostname(String) instead of forcing IPv4

[fawadasaurus]

Is your feature request related to a problem? Please describe.
I am trying to use the wafl binary as part of a docker-compose system and I need to use the --address field to have another docker container's hostname instead of an IP address. Currently it limits me to use IP address which is unknown until the container is created.

Propose a solution
Allow string values here and do not enforce it to be ipv4

Describe alternatives you've considered
add a host or hostname field instead of address but that seems redundant.

Additional context
None

[pkedy]

Closing after nanobus switch