Employee offboarding cherry (demisto#5376)

* Added Employee Offboarding usecase

* Added descriptions

* Added version -1

* moved from indicatorfields to incidentfields

Co-authored-by: Ido van Dijk <[email protected]>

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Content Release 19.12.0

Change content version

Update config.yml

update content versions

Merge pull request demisto#4860 from demisto/Prisma_incident_type_19.…

…11.0

Changed fromversion to string

fml

Update config.yml

Merge pull request demisto#4505 from demisto/traps_new_integration

Traps new integration

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