Please answer these questions before submitting pull request - Why submit this pull request? - [ ] Bug fix - [ ] New feature provided - [x] Improve performance
### New feature or improvement - Describe the details and related test reports. In all pom's dependency versions were hardcoded. I moved them into properties tag. I scan the whole project. [ Full content available at: https://github.com/apache/incubator-skywalking/pull/1583 ] This message was relayed via gitbox.apache.org for [email protected]
