Add Makefile and lint target

Makefile

@@ -0,0 +1,7 @@
+.PHONY: lint
+
+help: ## Show this help.
+	@fgrep -h "##" $(MAKEFILE_LIST) | fgrep -v fgrep | sed -e 's/\\$$//' | sed -e 's/##//'
+
+lint: ## Runs ansible-lint against all roles in the playbook
+	ansible-lint