In particular, add support for -server_version=raw and use matching
format for the output of -version and -server_version.
The "normal" format is essentially defined by (version.Info) String()
method, so future updates to that method will be reflected on both.
Full version information is still available by using the "raw" flag.
Tested:
- Used cluster/kubecfg.sh to query local build and the server.
$ cluster/kubecfg.sh -version
Kubernetes version 0.2+, build 9316edfc0d2b28923fbb6eafa38458350859f926
$ cluster/kubecfg.sh -server_version
Server: Kubernetes version 0.2, build a0abb38157
$ cluster/kubecfg.sh -version=raw
version.Info{Major:"0", Minor:"2+", GitVersion:"v0.2-25-g9316edfc0d2b28", GitCommit:"9316edfc0d2b28923fbb6eafa38458350859f926", GitTreeState:"clean"}
$ cluster/kubecfg.sh -server_version=raw
version.Info{Major:"0", Minor:"2", GitVersion:"v0.2", GitCommit:"a0abb3815755d6a77eed2d07bb0aa7d255e4e769", GitTreeState:"clean"}
Fixes: #1092
Signed-off-by: Filipe Brandenburger <filbranden@google.com>
b849d65b32