python-cryptography: bump to release 2.4.2
python-cryptography: bump to release 2.4.2

kensipe/dcos,dcos/dcos,dcos/dcos,dcos/dcos,kensipe/dcos,mesosphere-mergebot/dcos,mesosphere-mergebot/dcos,dcos/dcos,mesosphere-mergebot/mergebot-test-dcos,GoelDeepak/dcos,mesosphere-mergebot/dcos,dcos/dcos,kensipe/dcos,GoelDeepak/dcos,mesosphere-mergebot/mergebot-test-dcos,mesosphere-mergebot/dcos,kensipe/dcos,GoelDeepak/dcos,mesosphere-mergebot/mergebot-test-dcos,mesosphere-mergebot/mergebot-test-dcos,GoelDeepak/dcos