Change log for RUBRIK

Date Changes
2022-12-01 Enhancement - Modified grok pattern to parse "Rubrik Polaris" logtypes.
Mapped the field "iD" to "metadata.product_log_id".
Mapped the field "severity" to "security_result.severity".
Mapped the field "lastActivityStatus" to "security_result.action_details".
Mapped the field "clusterName" to "target.resource.name".
Mapped the field "clusterID" to "target.resource.product_object_id".
2022-07-01 Enhancement - Modified grok pattern to parse "ansible-command", "sshd", "Rubrik" logtypes.
Mapped "event.idm.read_only_udm.metadata.event_type" to status_update from Generic_event.