First implementation of #374 and #155 :SNMPv3 Rest API enhancements
TLE-18 Rework Snmp Walk Class to use rowCompleted

Added CiscoVtpVlanTableTracker
Added CiscoVtpStatus
fix merge
Fixed a typo and better documentation
Added more attributes to EndPoint

Added ifDescr and ifAlias
Added the PortDescr to lldp classes
 TLE-18 Rework Snmp Walk Class to use rowCompleted

Added Dot1dBase
Added Dot1dStp
 TLE-18 Rework Snmp Walk Class to use rowCompleted

added the class to manage bridgeporttable
Merge branch 'master' into features/linkd-scalability