Consider allowing some options to kubesh itself

[tobias]

It probably makes sense to allow some of these options to be passed to the kubesh commands, especially options for connecting to a server.

(kubesh) ~/w/g/k/s/k/kubernetes> ./_output/bin/kubectl options
The following options can be passed to any command:

      --alsologtostderr=false: log to standard error as well as files
      --api-version='': DEPRECATED: The API version to use when talking to the server
      --as='': Username to impersonate for the operation
      --certificate-authority='': Path to a cert. file for the certificate authority
      --client-certificate='': Path to a client certificate file for TLS
      --client-key='': Path to a client key file for TLS
      --cluster='': The name of the kubeconfig cluster to use
      --context='': The name of the kubeconfig context to use
      --insecure-skip-tls-verify=false: If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure
      --kubeconfig='': Path to the kubeconfig file to use for CLI requests.
      --log-backtrace-at=:0: when logging hits line file:N, emit a stack trace
      --log-dir='': If non-empty, write log files in this directory
      --log-flush-frequency=5s: Maximum number of seconds between log flushes
      --logtostderr=true: log to standard error instead of files
      --match-server-version=false: Require server version to match client version
  -n, --namespace='': If present, the namespace scope for this CLI request
      --password='': Password for basic authentication to the API server
  -s, --server='': The address and port of the Kubernetes API server
      --stderrthreshold=2: logs at or above this threshold go to stderr
      --token='': Bearer token for authentication to the API server
      --user='': The name of the kubeconfig user to use
      --username='': Username for basic authentication to the API server
  -v, --v=0: log level for V logs
      --vmodule=: comma-separated list of pattern=N settings for file-filtered logging