Update Envoy SHA to version 1.6.0 (envoyproxy#1220)

Automatic merge from submit-queue. Update Envoy SHA to version 1.6.0 Signed-off-by: Gary Brown <gary@brownuk.com> **What this PR does / why we need it**: This PR updates the Envoy SHA to use the commit associated with version 1.6.0. This version includes an update to propagate the B3 sampled header value. **Release note**: ```release-note NONE ```
rshriram · Mar 21, 2018 · f6942b9 · f6942b9
1 parent 0a539af
commit f6942b9
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diff --git a/WORKSPACE b/WORKSPACE
@@ -30,7 +30,7 @@ bind(
 )
 
 # When updating envoy sha manually please update the sha in istio.deps file also
-ENVOY_SHA = "9d4ca6dbc8808daf8dc4d8fdf52094191444af98"
+ENVOY_SHA = "4dd49d8809f7aaa580538b3c228dd99a2fae92a4"
 
 http_archive(
     name = "envoy",

diff --git a/istio.deps b/istio.deps
@@ -11,6 +11,6 @@
 		"repoName": "envoyproxy/envoy",
 		"prodBranch": "master",
 		"file": "WORKSPACE",
-		"lastStableSHA": "9d4ca6dbc8808daf8dc4d8fdf52094191444af98"
+		"lastStableSHA": "4dd49d8809f7aaa580538b3c228dd99a2fae92a4"
 	}
 ]