Revert "Revert "B-56614 Added jacoco to a couple of poms so that it would start recording coverage.""

This reverts commit adf52983c1bb2d5b45d520b750476f3370577922.
B-56614: update jacoco version
B-56614: update jacoco version, removed alternative executions
Merge pull request #873 from rackerlabs/adding-jacoco

Added jacoco unit test coverage