Change the go version checking in go format to the same as in contrib.

hack/verify-gofmt.sh

@@ -24,9 +24,9 @@ KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
 
 GO_VERSION=($(go version))
 
-if [[ -n $(echo "${GO_VERSION[2]}" | grep -E 'go1.1|go1.2|go1.3') ]]; then
-  echo "Unsupported go version '${GO_VERSION}', skipping gofmt."
-  exit 0
+if [[ -z $(echo "${GO_VERSION[2]}" | grep -E 'go1.4|go1.6') ]]; then
+  echo "Unsupported go version '${GO_VERSION[2]}', skipping gofmt."
+  exit 1
 fi
 
 cd "${KUBE_ROOT}"