Faucet

* Bug fix: Ensure config_hash metric exists even if parsing fails
* Bug fix: fix bug introduced in faucet 1.9.5 that causes hardware test suite to fail
* Upgrade to pytype 2019.5.24
* Upgrade to chewie 0.0.17

* Ryu 4.32
* pytype 2019.5.15
* Grafana 6.2.0
* Support egress ACLs for VLANs
* Support tunnel destination on same DP as source
* Randomize OF ports used by software integration tests (better test coverage and prevent hard coded test OF ports)
* Fix LACP port status on reload
* Fixes for TunnelTest and Stack test realiabilty

* Add support for Ubuntu Disco
* Upgrade to eventlet 0.24.1
* Tunnelling feature now supports source and destination on same DP, and no longer requires packet in
* Avoid VIDs over 2047 in test suite which aren't supported on some platforms
* Always delete groups on Aruba switches even if groups are not in use
* Verify flowdels cannot be sent that don't match table definition
* Remove orphaned drop_lldp attribute

* Fix config hash Prometheus variable
* Fix extraneous tag on one direction of mirrored packets
* Allow consistent OF port offset to make hardcoded port numbering brittleness easier to test
* Fix vlan_vid update to tunnel ACL rule not noticed
* Allow hardware test suite to use IPv6 for control plane connections
* Upgrade to pytype 2019.4.26

* 802.1x: Allow assignment of VLAN ID by RADIUS
* 802.1x: Allow periodic re-auth
* 802.1x: Configurable success/fail ACLs
* 802.1x: FAUCET events for 802.1x activity
* Add Prometheus export of faucet config file hashes, for faucetagent.
* Upgrade to Ryu 4.31 (fix TLS downgrade)

* remove datadiff library and fix exception in producing config diff for port config changes
* pytype upgrade to 2019.3.21
* fix for DP up/down state ambiguity while handling a new config that requires a cold start
* proactive check for crashed threads