The value here is that the exec plugin author can use the kubeconfig to assert
how standard input is treated with respect to the exec plugin, e.g.,
- an exec plugin author can ensure that kubectl fails if it cannot provide
standard input to an exec plugin that needs it (Always)
- an exec plugin author can ensure that an client-go process will still call an
exec plugin that prefers standard input even if standard input is not
available (IfAvailable)
Signed-off-by: Andrew Keesler <akeesler@vmware.com>
Kubernetes-commit: cd83d89ac94c5b61fdd38840098e7223e5af0d34
