Refactoring of CleanUpTask
Merge pull request #1962 from systay/cleanuptask-cleanup

Refactoring of CleanUpTask
Decouple {EE|GDB}Helper from JUnit so that it gets easier to use the new test style

o Introduced new top-level test classes: {EE|GDB}JUnitSuite, EEJUnitSuite
o Converted EqualsTest to use EEFunSuite as an example
Rename new suite classes to Cypher{JUnit|Fun}Suite and move to commons

o Adds a provided dependency from cypher to commons for tests
Rename StatisticsChecker to StatisticsCheckSupport