build(deps): Bump jetty-webapp in /test
build(deps): Bump jetty-webapp in /test

Bumps [jetty-webapp](https://github.com/eclipse/jetty.project) from 9.2.9.v20150224 to 9.4.34.v20201102.
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](https://github.com/eclipse/jetty.project/compare/jetty-9.2.9.v20150224...jetty-9.4.34.v20201102)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
MatheMatrix/zstack,zstackio/zstack,zstackio/zstack,AlanJager/zstack,AlanJager/zstack,MatheMatrix/zstack,zstackorg/zstack,zstackio/zstack,MatheMatrix/zstack,zstackorg/zstack,AlanJager/zstack