Added openid connect
Update endpoints
Fix redirect_uri param
Added testcases
Update schema
Added logout url
Added access_token to userinfo method
Update samples for openid_connect
Merge branch 'openid_connect' into configuration
Added configure method to do configurations
Created files for API, Credential and Util modules
Added openid_client_id and openid_client_secret configuration
Created alias for Core::OpenIDConnect constant
Merge branch 'openid_connect'
Merge branch 'configuration'