Moved all OAuth2 requests to use body paramters

1. Changed all oauth requests not to use query strings
2. Using post form instead application/x-www-form-urlencoded (max backwards support)

Removed get_user_info and updated bearer tokens

Breaking change:

1. removed get_user_info

Small fixes for Oauth2 bearer token

Merge pull request #41 from LamaAni/session_fix_3

Session small fix for auth bearer to token

Added support for OAuth2 authorize_session and validate_session (with redirect)

Merge pull request #40 from LamaAni/session_fix_2

Added support for OAuth2 authorize_session and validate_session (with redirect)

OAuth barer token no refresh and small fixes to session

Merge pull request #39 from LamaAni/auth2_fixes_3

Auth2 fixes - Changed to proper session

Added support for authorize_session (ingress) callbacks

Merge pull request #38 from LamaAni/auth2_fixes_2

Added support for authorize_session callbacks (ingress controllers and others)

Update token info when token is loaded

Fixes for token load

Fixes for session provider

Merge pull request #36 from LamaAni/session_fixes

Session fixes

Added internal session support for cookie and etcd

Merge pull request #35 from LamaAni/sessions

Sessions

Fast fix for cookie session options

Merge pull request #34 from LamaAni/fast_fix

Fix for session cookie options