Misleading warning message if version check is skipped

[lizrice]

If the executable(s) aren't on the path (pending issue #15) we skip the version check, but we get the following warning:

[WARN] kube-apiserver unsupported version

This is misleading - we should distinguish between warning that the version is incorrect and warning that the version check has been skipped.

[ttousai]

Welcome back :)

[lizrice]

haha, thanks :-)

Also, if the --verbose flag is on we get a lot of somewhat unnecessary error messages:

kube-apiserver: command not found in path, error: exec: "kube-apiserver": executable file not found in $PATH
kube-scheduler: command not found in path, error: exec: "kube-scheduler": executable file not found in $PATH
kube-controller-manager: command not found in path, error: exec: "kube-controller-manager": executable file not found in $PATH
kube-apiserver: command not found on path - version check skipped, error: exec: "kube-apiserver": executable file not found in $PATH
failed to run:[kube-apiserver --version], error: exec: "kube-apiserver": executable file not found in $PATH

I don't think there's any need to look for all the binaries in the path, we only need to try the one we would use for the version check?

[ttousai]

I agree. The error handling is not as good as I would like it. I will work on this.

[lizrice]

Also now fixed I believe with #34