Change log for ARUBA_IPS

Date Changes
2022-06-16 Enhancement
- Mapped the field 'rogue_aps.first_seen' to 'principal.domain.first_seen_time'.
- Mapped the field 'rogue_aps.last_seen' to 'principal.domain.last_seen_time'.
- For 'rogue_aps' type of logs modified mapping for the UDM field 'metadata.event_timestamp' to 'rogue_aps.last_seen'.