Fix NMS-6101: Linkd throws Exception when CdpCacheIpv4Address is blank

Added a try so that NumberFormatException is catched
Fix for NMS-6102 and NMS-6103

Added a test for checking the duplication of
the datalinkinterface
Removed the duplicated ip address from
discoverable links
Fixed Linkd test

Added a flush to datalinkinterface dao
after hibernate dave links
Also changed the test according with the network layout
get rid of the stack trace when a FileReloadContainer resource is not a file, it is just noise
update jboss repository name to match others in tree.
for vaadin-addons repository, use the opennms.org maven proxy.
use maven.opennms.org proxy of vaadin-snapshots.
repository http://maven.opennms.org/content/groups/maven.org-release2 is called maven-repo
update repository id for springsource.com group.
use maven.opennms.org codehaus-snapshots proxy repository
NMS-6107 SNMP support for Clavister security devices
Missed commit for NMS-6107: SNMP support for Clavister security devices
 Fix for NMS-6102 and NMS-6103: update is managed
Added IpRouteStatus check for ipRoute validation
OPENNMS-NMS7-UNIT-37 fix changed data collection configs
Fixing NMS-6108: Can't use SNMPv3 with NoAuth-NoPriv

This fix contains something missing on the solution for NMS-5556 (SNMPV3
context not working in provisiond).
Merge remote-tracking branch 'origin/1.12'

Conflicts:
	core/snmp/impl-snmp4j/pom.xml
	opennms-config/src/test/java/org/opennms/netmgt/config/DataCollectionConfigParserTest.java
Formatted text for a specific method to check duplicated ip address
Added comments for fixReminder
Added comment for managing update