tree eaf212647f9bab001e62bb35647255b5f107bd2e
parent 3ff5af330857b2aadcdae9d9e6ca37b7e5d2c56e
author Lorenz Brun <lorenz@nexantic.com> 1593009722 +0200
committer Lorenz Brun <lorenz@nexantic.com> 1593009722 +0200

Add nanoswitch and cluster testing

Adds nanoswitch and the `switched-multi2` launch target to launch two Smalltown instances on a switched
network and enroll them into a single cluster. Nanoswitch contains a Linux bridge and a minimal DHCP server
and connects to the two Smalltown instances over virtual Ethernet cables. Also moves out the DHCP client into
a package since nanoswitch needs it.

Test Plan:
Manually tested using `bazel run //:launch -- switched-multi2` and observing that the second VM
(whose serial port is mapped to stdout) prints that it is enrolled. Also validated by `bazel run //core/cmd/dbg -- kubectl get node -o wide` returning two ready nodes.

X-Origin-Diff: phab/D572
GitOrigin-RevId: 9f6e2b3d8268749dd81588205646ae3976ad14b3