Fixed .deb file make target, there was an issue in that git does not track...

Fixed .deb file make target, there was an issue in that git does not track empty directories which the template dir had and the build relied on.  Dir creation is now done in Makefile

Makefile

@@ -124,6 +124,7 @@ out/minikube_$(DEB_VERSION).deb: out/minikube-linux-amd64
 	cp -r installers/linux/deb/minikube_deb_template out/minikube_$(DEB_VERSION)
 	chmod 0755 out/minikube_$(DEB_VERSION)/DEBIAN
 	sed -E -i 's/--VERSION--/'$(DEB_VERSION)'/g' out/minikube_$(DEB_VERSION)/DEBIAN/control
+	mkdir -p out/minikube_$(DEB_VERSION)/usr/bin
 	cp out/minikube-linux-amd64 out/minikube_$(DEB_VERSION)/usr/bin
 	dpkg-deb --build out/minikube_$(DEB_VERSION)
 	rm -rf out/minikube_$(DEB_VERSION)