Improve MAVEN build Performance

[ChenZhangg]

Apache Maven Dependency Plugin can be used to find unused dependencies. And I found following list. Maybe we can remove them. jwbf {groupId='org.apache.httpcomponents', artifactId='fluent-hc', version='4.5.10', scope='compile'} {groupId='org.jacoco:org.jacoco.agent', artifactId='jar', version='0.8.4', scope='test'} {groupId='org.eclipse.jetty', artifactId='jetty-servlet', version='9.4.20.v20190813', scope='test'} {groupId='org.hamcrest', artifactId='hamcrest-library', version='2.1', scope='test'}

According to Maven parallel test, we can run tests in parallel.

===================== If there are any inappropriate modifications in this PR, please give me a reply and I will change them.