Include `tags.atomic_guid` and `tags.required_fields` into ESCU

[ccl0utier]

Is your feature request related to a problem? Please describe. Could the team expose tags.atomic_guid and tags.required_fields in ESCU please? That would help a lot track this important information into other apps that "augment" ES or directly via REST.

Describe the solution you'd like For those fields to be included in the savedsearches.conf information in ESCU.

Describe alternatives you've considered N/A

Additional context