Update go dependencies

vendor/github.com/Azure/go-autorest/.travis.yml

@@ -4,6 +4,7 @@ language: go
 
 go:
   - master
+  - 1.11.x
   - 1.10.x
   - 1.9.x
   - 1.8.x
@@ -13,7 +14,7 @@ matrix:
     - go: master
 
 env:
-  - DEP_VERSION="0.4.1"
+  - DEP_VERSION="0.5.0"
 
 before_install:
   - curl -L -o $GOPATH/bin/dep https://github.com/golang/dep/releases/download/v$DEP_VERSION/dep-linux-amd64 && chmod +x $GOPATH/bin/dep
@@ -26,7 +27,7 @@ install:
 
 script:
   - grep -L -r --include *.go --exclude-dir vendor -P "Copyright (\d{4}|\(c\)) Microsoft" ./ | tee /dev/stderr | test -z "$(< /dev/stdin)"
-  - test -z "$(gofmt -s -l -w ./autorest/. | tee /dev/stderr)"
+  - if [[ $TRAVIS_GO_VERSION == 1.11* ]]; then test -z "$(gofmt -s -l -w ./autorest/. | tee /dev/stderr)"; fi
   - test -z "$(golint ./autorest/... |  tee /dev/stderr)"
   - go vet ./autorest/...
   - test -z "$(gas ./autorest/... | tee /dev/stderr | grep Error)"