1.0.0+f3c4111fe695f9479c7fc0dfa98f45ec5968f6da

removes glog

This commit removes all glog references in favor of the structured
logging approach using go-kit/log.

There is plenty room for improvement. The intention here is to rid glog
without introducing to many bugs.

`kubernikusctl` is left to use glog as the main intent of logging here
is human consumption on the cli without an intermediate log retrieval
system. Also, there's tight integration with k8s clients that log using
glog anyway.

The log output is not yet completely clean and 100% structured logging,
because of the informer framwork being uncooperative. We could get rid
of that using a higher default log threshold instead of the default
`INFO`. That exercise is left for another time.

This commit fixes #100