Update changelog for 2.17.0

Signed-off-by: Teju Nareddy <[email protected]>

CHANGELOG.md

@@ -1,3 +1,15 @@
+# Release 2.17.0 02-09-2020
+
+- Support GCP deployment with service account key (#308)
+- Add default location in Report call for non_gcp (#307)
+- Set API version in autogenerated CORS methods (#311)
+- Better naming of healthz and cors operations (#302)
+- Add ApiKeyState into report log entry (#305)
+- Fix error with reporting invalid API Keys (#295)
+- Remove grpc_stats filter (#299)
+- Cleanup un-used metrics in report (#296, #300)
+- Reduce noise of Envoy logs with `--enable_debug` (#293)
+
 # Release 2.16.0 18-08-2020
 
 - Add more port restrictions for usability (#281)