Berlin release

1. b5be94d SEBA-300 Add ponsim_onu performance metrics by Scott Baker · 6 years ago
2. 32fe881 VOL-1180: Enable ponsim to send packet-outs on NNI port. by Jonathan Hart · 6 years ago
3. ea82b46 VOL-1123 Specify serial number for Ponsim v2 ONU on command line by Andy Bavier · 6 years ago
4. 70e8b2d VOL-1121: made all ponsim gRPC connections unencrypted by Jeff · 6 years ago
5. 41513bf Fixes to pass license check by Zack Williams · 6 years ago
6. 3559506 VOL-291 : PON simulator refactoring for cluster integration by Stephane Barbarie · 6 years ago