snmp checks

[csmith]

No description provided.

[tsumaru720]

should probably support some of the more we'll known OIDs by default such as what snmpd exposes for disk usage, load average, memory usage etc for linux / windows

Also should support the user being able to provide an arbitrary OID to use also

[csmith]

Open question: what would the failure criteria actually be? Limit it to numeric fields and have at_least and at_most parameters?

[tsumaru720]

SNMP can also return strings, so I think similar options to what the http.get plugin has, in addition to being able to handle numbers. If its outside of those range/doesnt meet that criteria (or times out)