Move auth success/invalidate to interface
add options for authentication request handlers

secure endpoints behind token

Conflicts:
	pkg/cmd/server/origin/auth.go

WIP - handle the google oauth callback

Conflicts:
	pkg/cmd/server/origin/auth.go
Refactor external oauth providers, add GitHub, use osincli.Client

Refactor auth mux wiring

Code review

Remove custom String() functions, dump config in verbose logging only

Move token auth failure logging into failure handler

Validate state, redirect inside success handler, add success handler chain

Code review 2: godoc, require error handlers and use consistently, fix closure bug
bump(github.com/RangelReale/osincli): 23618ea0fc3faa3f43954ce8ff48e31f5c784212
Merge pull request #248 from liggitt/oauth

Merged by openshift-bot