nAttrMon - nOutput_SNMPServer enable multi MIB and RE for Warning config

[abrizida]

The nAttrMon configuration needs to enable the SNMP X733 protocol. To allow it a multi MIB is needed.
Also a request was made for the Alert configuration enabling a regular expression and not just the full Warning title.

In the nAttrMon object, instead of configuring a OID per value, a OIDList needs to be enaled.

Current configuration:

output:
name: SNMP Output
chSubscribe: nattrmon::warnings
execFrom: nOutput_SNMPServer
execArgs:
enabled: true
baseOID: 1.3.6.1.4.1.2.3
oidMapping:
"test/test": 1.3.6.1.4.1.2021.4.5.0

Desired configuration:

output:
name: SNMP Output
chSubscribe: nattrmon::warnings
execFrom: nOutput_SNMPServer
execArgs:
enabled: true
baseOID: 1.3.6.1.4.1.2.3
oidMapping:oidMapping:
"oidMaping":
"OID": 1.3.6.1.4.1.2021.4.5.0
"OIDList":
- OID: 1.3.6.1.6.3.1.1.4.1.0
type: s
value: 1.3.6.1.4.1.31053.0.1.0.2.0.1.0.5.0.10