Basic structure for the end-user client command (osc)

Exposes kubectl subcommands through osc

osc makes use of MultiRESTMapper so the origin api can reached

Moved kubectl global flags setup to separate method

Removed factory.AddGlobalFlags, global flags are installed inline

Renamed the client command creator
Exposes 'openshift cli', removing the osc binary for now

Adding end-users cli to test-cmd
Removes 'openshift kubectl' in favor of 'openshift cli', 'kubectl' set as an alias

'openshift kubectl' is an alias to 'openshift cli'

cli optimizations and naming adjustments

Fixes docs for openshift cli
Marks 'openshift kube' as deprecated
Merge pull request #447 from fabianofranz/osc_skeleton

Merged by openshift-bot
Simplify webhook URL display