Fix for Big NMS-6611

Problem with disable-ssl-verification in XML_Collector
better logging so we can actually see where it gets stuck
why not make them all atomic, just in case? :P
make sure nodes are cleaned up after each test runs
fix dirty context of vacuumd tests
NMS-6621 make order of graph reports deterministic
Merge remote-tracking branch 'origin/1.12'
backport MockSnmpAgent atomic fixes from master
Merge remote-tracking branch 'origin/1.12'
Tweaks to logging and reason codes in HttpMonitor
these should be info, not warn
Merge remote-tracking branch 'origin/1.12'

Conflicts:
	opennms-services/src/main/java/org/opennms/netmgt/poller/monitors/HttpMonitor.java
Added ordering to SpringLoaderTest.
Merge branch 'master' into mrlambeth-master