Add stubs for windows CI

Signed-off-by: Daniel Nephin <dnephin@docker.com>

hack/make/validate-dco

@@ -0,0 +1,7 @@
+#!/bin/bash
+#
+# This file is a stub. It exists because windowsRS1 calls this script directly 
+# instead of using a proper interface. It should be removed once windows CI is 
+# fixed.
+#
+$SCRIPTDIR/validate/dco

hack/make/validate-gofmt

@@ -0,0 +1,7 @@
+#!/bin/bash
+#
+# This file is a stub. It exists because windowsRS1 calls this script directly 
+# instead of using a proper interface. It should be removed once windows CI is 
+# fixed.
+#
+$SCRIPTDIR/validate/gofmt

hack/make/validate-pkg

@@ -0,0 +1,7 @@
+#!/bin/bash
+#
+# This file is a stub. It exists because windowsRS1 calls this script directly 
+# instead of using a proper interface. It should be removed once windows CI is 
+# fixed.
+#
+$SCRIPTDIR/validate/pkg-imports