Title: Fixed broken SNMP checks in case SNMP check interval is configured for clusters
Level: 1
Component: core
Class: fix
Compatible: compat
State: unknown
Version: 1.2.8b1
Date: 1447247901

The SNMP check interval caused the agent data of single nodes to be skipped for clusters
which could lead to CRITICAL clustered services which are based on SNMP checks.
