add NOTICE file to the envoy blob
[finishes #159736371](https://www.pivotaltracker.com/story/show/159736371)
@@ -3,9 +3,9 @@ jq/jq-1.5-linux64.tgz:
object_id: 95842923-7015-457a-6a72-34178d00c5e2
sha: e7d840036aac774bd1c713ae491ef7dccb6dee76
proxy/envoy-872728d4ad50acececaeae389da59cb72846cf89.tgz:
- size: 4616012
- object_id: 1e2cfbee-f88e-4828-454a-4ac15cf3f632
- sha: f0eeae35d61437e299b8a137f132d626adf3ac4b
+ size: 4616096
+ object_id: d3a85073-f30d-4e32-5d0e-4beb43f65fff
+ sha: 464222b980bba5d8a6f3590a66985993e4aeb0e5
tar/tar-1503683828.tgz:
size: 457686
object_id: 2bf800f2-09ae-4b3a-4d9d-896dcee551ac
