v1.5.4 - mfw-2339-save-confirmation-hangs

Merge pull request #74 from untangle/mfw-2339-save-confirmation-hangs

MFW-2339 Move saveLocker lock and remove defer in favor of explict un…

v1.5.3: MFW-2323 Update protobuff: add Sate field to Discovery Arp.

MFW-2323 - Use 'ip neigh' instead of 'arp' for arp host discovery implementation.

v1.5.1: Merge pull request #68 from untangle/MFW-2299-clean-device

MFW-2299: Prune the in-memory device data in reportd

v1.4.5: Merge pull request #68 from untangle/MFW-2299-clean-device

MFW-2299: Prune the in-memory device data in reportd

MFW-2307

MFW-2307 Ignore device updates where mac address is a broadcast. (#67)

* MFW-2307 Ignore device updates where mac address is a broadcast.

v1.4.3: Merge pull request #65 from untangle/MFW-2299-DeviceDiscovery

Added LastUpdate field in ARP, NMAP, LLDP and ConntrackConnections device discovery plugins

Added shared package for geo ip lookup to use both in packetd and restd

Merge pull request #62 from untangle/geoip

MFW-2274: GeoIp lookup is not returning correct country

MFW-1885

Added shared libraries needed to support the creation of a connection collector in discoverd.

MFW-1966

Updated return types from discovery RPC calls.

Added Generic Caches

Added generic Least Recently Used and Random Replacement caches. Also added a sweeper struct that can be used to sweep the caches on a timer.