Depend on later SNMP4J and SNMP4J-Agent artifacts
Fix for NMS-6389: vmwarereqtool is initializing the DB Pool

VmwareViJavaAccess forces the initialization of all the Spring context
if the class is instantiated without user credentials, in order to
retrieve the implementation of VmwareConfigDao.

VmwareRequisitionTool was refactored to parse and retrieve the
credentials from vmware-config.xml if the URL doesn't contain the
credentials.
NMS-6398: Enhance DnsMonitor to evaluate size of answer section
Fix for NMS-5852 - Uncaught exception in HostResourceSwRunMonitor when handling empty strings

I've added some explicit checks, and a customer has validated that the
problem has been resolved.
Merge remote-tracking branch 'origin/1.12'

Conflicts:
	opennms-services/src/main/java/org/opennms/netmgt/poller/monitors/DnsMonitor.java