Localkube log viewing

[ethernetdan]

It is useful to look at localkubes logs when debugging cluster problems.

Logs should be accessible using spread cluster logs [apiserver | weave | weaveproxy]. Defaults to API Server but weave and weaveproxy should also be able to be specified.

Use docker client. localkube has a label (rsprd.com/name=localkube). Weave and weave proxy use consistent names.