Bump junit4-maven-plugin from 2.6.3 to 2.7.3
Bump junit4-maven-plugin from 2.6.3 to 2.7.3

Bumps [junit4-maven-plugin](https://github.com/randomizedtesting/randomizedtesting) from 2.6.3 to 2.7.3.
- [Release notes](https://github.com/randomizedtesting/randomizedtesting/releases)
- [Changelog](https://github.com/randomizedtesting/randomizedtesting/blob/master/CHANGES.txt)
- [Commits](https://github.com/randomizedtesting/randomizedtesting/compare/release/2.6.3...release/2.7.3)
dadoonet/fsriver,dadoonet/fscrawler,dadoonet/fscrawler,dadoonet/fsriver,dadoonet/fsriver,dadoonet/fscrawler