SPC-674 only update datestamps when changing contents
Merge remote-tracking branch 'opennms/1.12'

Conflicts:
	opennms-provision/opennms-provision-persistence/src/main/java/org/opennms/netmgt/provision/persist/AbstractForeignSourceRepository.java
	opennms-webapp/src/main/java/org/opennms/web/rest/ForeignSourceRestService.java
	opennms-webapp/src/main/java/org/opennms/web/rest/RequisitionAccessService.java
	opennms-webapp/src/main/java/org/opennms/web/rest/RequisitionRestService.java
	opennms-webapp/src/main/java/org/opennms/web/svclayer/support/DefaultManualProvisioningService.java