Build: Upgraded Groovy to 2.4 and Spock to 1.1
Build: Upgraded Groovy to 2.4 and Spock to 1.1

- (and removed failed attempts at limiting unit test output)

liquibase/liquibase,dbmanul/dbmanul,jimmycd/liquibase,jimmycd/liquibase,fossamagna/liquibase,dbmanul/dbmanul,liquibase/liquibase,liquibase/liquibase,dbmanul/dbmanul,mattbertolini/liquibase,mbreslow/liquibase,jimmycd/liquibase,NSIT/liquibase,NSIT/liquibase,fossamagna/liquibase,mbreslow/liquibase,mbreslow/liquibase,NSIT/liquibase,mattbertolini/liquibase,NSIT/liquibase,jimmycd/liquibase,mattbertolini/liquibase,mattbertolini/liquibase,fossamagna/liquibase,mbreslow/liquibase,dbmanul/dbmanul