Setup Coderbunker wifi router with CANDRA MAC capture

See: https://github.com/coderbunker/candra/blob/develop/docs/ROUTER.md

We might want to use the Merlin asuswrt router instead:

https://github.com/RMerl/asuswrt-merlin/wiki

so the setup commands are a bit different. First step is to gain ssh access to the test router.