PROW-150: When refactoring Revision.Version int to String, failed to change comparison to .equals from ==.

Although unit-test covered this logic, the same String (reference) was used in the test case so, '==' and .equals both were true.
Merge branch 'PROW-150-version-comparisons-using-strings' into 'master'

PROW 150 version comparisons using .equals

See merge request !2