Fix for issue #8950
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* refactor: Updated discovery to use a core module for sysDescr/sysObjectID use
* final update hopefully
* revert changes
* more changes + docs
* migrated poller to use numerical sysObjectID
* more updates for sysObjectID
* update any alert rules which might have enterprises. in
* moved schema file
* small updates
* updated getHostOS()
* scrut fixes
* updated sysObjectId -> sysObjectID
* updated sysObjectId -> sysObjectID
* updated remainder of sysObjectId -> sysObjectID
* another sysObjectId -> sysObjectID
* fixed secureplatform test data
* Fix tests: $device is not pulled from the database before polling
Also, update the db in the core discovery module.
* Don't do uneeded snmp queries
sensors discovery 26 -> 16
wrapped some poller modules in db checks. The same could be done for some others, but more work is needed.
* travis fix
