Add auth method information to AccessChecker audit log

If we turn on audit logging, authentication events are logged with auth method information (e.g. KERBEROS, TOKEN etc) like below.

2021-11-30 14:15:07,417 INFO SecurityLogger.org.apache.hadoop.hbase.Server: Auth successful for PRINCIPAL@REALM (auth:KERBEROS)

However, authorization event logs which are emitted by AccessChecker class don't contain auth method information.

I need this info to filter out audit log lines generated by MapReduce jobs, auth method = TOKEN case.