[Cisco Umbrella] Expand tests coverage for log schema version v13

[navnit-elastic]

Support for log schema version v13 was added in in #15791.
The sample logs used in the pipeline tests are taken from the official Cisco Umbrella documentation:
https://docs.umbrella.com/umbrella-user-guide/docs/log-format-and-versioning

Some of these samples are missing certain field values. As a result those fields remain untested.
This issue serves as a reminder of this testing gap and to track the addition of more comprehensive tests once logs with complete field data become available from a live instance.

The following log types need to be added in the pipeline tests:

• Cloud Firewall Logs
• Intrusion Logs (IPS Logs)
• DLP Logs

[elasticmachine]

Pinging @elastic/security-service-integrations (Team:Security-Service Integrations)