SM-2359: Upgrade to Pax Exam 4.1.0

(Cherry picked from the commit 5ea4412e1869aae2f6aa389f55dfba49f5b7702e)
SM-2362: Require JDK 7 for build

(Cherry picked from the commit 86ca1c54a58f545e0dd9d389c158b8f0a54ed453)