for #13703 and #13992, this updates the logic used by the functions that
gather hosts that need DEP profile updates to use hosts directly from
`host_dep_assignments`, regardless of their MDM status.
This only applies to Premium users, we want to show the vulnerabilities' published date anywhere vulnerabilities are shown including API endpoints and third party integrations.
* add premium feature critical policies
* update documentation
* add test for premium-only field
* update old change-file
* test policies more comprehensively
* also test team policies
* PATCH returns wrong timestamp, updating test
Feature: Improve our capability to detect vulnerable software on Ubuntu hosts
To improve the capability of detecting vulnerable software on Ubuntu, we are now using OVAL definitions to detect vulnerable software on Ubuntu hosts. If data sync is enabled (disable_data_sync=false) OVAL definitions are automatically kept up to date (they are 'refreshed' once per day) - there's also the option to manually download the OVAL definitions using the 'fleetctl vulnerability-data-stream' command. Downloaded definitions are then parsed into an intermediary format and then used to identify vulnerable software on Ubuntu hosts. Finally, any 'recent' detected vulnerabilities are sent to any third-party integrations.
