Makefile: use our Github fork of shfmt instead of the one on the auth…

…or's personal domain

Signed-off-by: Bill Robinson <[email protected]>

Makefile

@@ -89,7 +89,7 @@ release-test-kubelegacy: build
 
 # shfmt reformats all shell scripts in this repo
 shfmt:
-	go get github.com/mvdan/sh/cmd/shfmt
+	go get github.com/contiv-experimental/sh/cmd/shfmt
 	find . -type f -name "*.sh" -print0 | xargs -0 shfmt -w
 
 # Test the installation on the provided cluster. This is for bare-metal and other