Bump Go version for CI and build to 1.11.1 (#4782)

.travis.yml

@@ -1,7 +1,9 @@
 language: go
 
 go:
-  - "1.11"
+  # Please keep this in-sync with the go version we build against in
+  # build-support/docker/Build-Go.dockerfile.
+  - "1.11.1"
 
 branches:
   only:

build-support/docker/Build-Go.dockerfile

@@ -1,4 +1,4 @@
-ARG GOLANG_VERSION=1.10.1
+ARG GOLANG_VERSION=1.11.1
 FROM golang:${GOLANG_VERSION}
 
 ARG GOTOOLS="github.com/elazarl/go-bindata-assetfs/... \