https://github.com/mitreid-connect/OpenID-Connect-Java-Spring-Server/issues/431:
Generating a new registration access token on read/update call and
revoking the token issued earlier.
Registration Token regeneration - when they are beyond their lifetime
(in read/update calls)
Configuration Property Bean to load the OP wide registration token life
time
made timeout field optional, tokens don't expire in the default case
applied token rotation to protected resources