Change log for KUBERNETES_AUDIT

Date Changes
2023-08-21 Enhancement:
- Parsed new format JSON logs.
- Based on 'verb', identified the specific "event_types".
- Mapped following additional fields :
- 'kind' to 'metadata.product_event_type'.
- 'apiVersion' to 'metadata.product_version'.
- 'auditID' to 'metadata.product_log_id'.
- 'stage' to 'metadata.description'.
- 'requestURI' to 'target.url'.
- 'userAgent' to 'network.http.user_agent'.
- 'verb' to 'network.http.method'.
- 'responseStatus.code' to 'network.http.response_code'.
- 'user.username' to 'principal.user.user_display_name'.
- 'user.uid' to 'principal.user.userid'.
- 'user.groups' to 'principal.user.group_identifiers'.
- 'sourceIPs' to 'principal.ip'.
- 'objectRef.resource' to 'target.resource.resource_subtyp'.
- 'annotations.authorization.k8s.io/decision' to 'security_result.action'.
- 'annotations.authorization.k8s.io/reason' to 'security_result.description'.
- 'stageTimestamp' to 'metadata.collected_timestamp'.
2022-07-14 Newly created parser