Update Makefile

Makefile

@@ -14,6 +14,9 @@ endif
 tools:
 	go generate -tags tools tools/tools.go
 
+test:
+	echo "Placeholder"
+
 # Run acceptance tests
 testacc:
 	TF_ACC=1 go test ./... -v $(TESTARGS) -timeout 120m
@@ -38,4 +41,4 @@ all:
 rm-id-flag-from-docs:
 	find docs/ -name "*.md" -type f | xargs sed -i -e '/- \*\*id\*\*/d'
 
-.PHONY: testacc tools
+.PHONY: testacc tools