dependency prompting for unittest (#1212)

* build(deps): bump actions/cache from v2.1.4 to v2.1.5

Bumps [actions/cache](https://github.com/actions/cache) from v2.1.4 to v2.1.5.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](actions/cache@v2.1.4...1a9e213)

Signed-off-by: dependabot[bot] <support@github.com>

* improve etcd version and change create to put (#1203)

* dependency prompt

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Xin.Zh <dragoncharlie@foxmail.com>
Co-authored-by: AlexStocks <alexstocks@foxmail.com>
Co-authored-by: randy <ztelur@gmail.com>

metadata/report/zookeeper/report_test.go

@@ -164,6 +164,8 @@ func test1(t *testing.T) {
 	suite.testGetServiceDefinition()
 }
 
+// TestZookeeperMetadataReport is dependent on zookeeper-*-fatjar.jar,
+// please execute `make -f ../../../Makefile prepare` before running unittest.
 func TestZookeeperMetadataReport(t *testing.T) {
 	t.Run("test1", test1)
 }