update vendors slightly

vendor/github.com/mitchellh/cli/Makefile

@@ -0,0 +1,20 @@
+TEST?=./...
+
+default: test
+
+# test runs the test suite and vets the code
+test:
+	go list $(TEST) | xargs -n1 go test -timeout=60s -parallel=10 $(TESTARGS)
+
+# testrace runs the race checker
+testrace:
+	go list $(TEST) | xargs -n1 go test -race $(TESTARGS)
+
+# updatedeps installs all the dependencies to run and build
+updatedeps:
+	go list ./... \
+		| xargs go list -f '{{ join .Deps "\n" }}{{ printf "\n" }}{{ join .TestImports "\n" }}' \
+		| grep -v github.com/mitchellh/cli \
+		| xargs go get -f -u -v
+
+.PHONY: test testrace updatedeps

vendor/vendor.json

@@ -964,5 +964,5 @@
 			"revision": "860cbeca3ebcc600db0b213c0e83ad6ce91f5739"
 		}
 	],
-	"rootPath": "github.com/mitchellh/packer"
+	"rootPath": "github.com/hashicorp/packer"
 }