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.
* Add webhook to app config
* Add redis failing policies set and webhook
* Add basic webhook test
* Store hostname in redis
* Global policy deletion to remove policy ID from set and config
* Also process new passing policies
* Fix unit test
* Sort hosts
* Add more tests
* Add ListSets to the failing policies interface
* Fix server URL and garbage collect on the triggering side
* Do not use Redis SCAN
* Fix Redis operation order
* Add API changes to doc
* Add comments
* Add more tests
* Fix tests
* Add tests for config update upon deletion of policies
* Run make dump-test-schema
* Ignore policies that failed to run
* Add proper unit tests to trigger logic
* Fix comments
* WIP
* Add tests to service_osquerty_test.go
* Use SSCAN for listing hosts instead of SMEMBERS
* Add failing policies to docs/01-Using-Fleet/configuration-files/README.md
* Remove skip
* Fix PR comments
* wip
* Add tests and finish implementation
* Add proper default for periodicity, changes file, and documentation
* Fix tests and add defaults also to new installs
* EnableHostUsers should be true if undefined as well
* In some cases, periodicity can be zero because of the migrations
* Apply defaults when migrating appconfig
* Fix lint
* lint
* Address review comments
