synologysnmpv3 : Add CPU Utilization and Memory Utilization from SNMP and CPU usage triggers update

[BadFlo]

From : Storage_Devices/Synology/template_synology_diskstation_snmpv3/6.4/template_synology_diskstation_snmpv3.yaml

Hi,

By using .1.3.6.1.4.1.6574.1.7.1.0 and .1.3.6.1.4.1.6574.1.7.2.0 we can get CPU Utilization and Memory Utilization as reported on DSM WebGUI.

Then, we may choose to delete CPU Idle, System and User as they are not useful anymore.

Also, triggers should move from synoSystem.ssCpuIdle to synoSystem.cpuUtilization and reverse the signs.
Finally, a dépendance between the High and Very High Usage should be set, and recovery at <50 for both (or higher ?).

I don't know how to do a Pull Request, so if someone else wants to, I can share my new template code.