Run tests with Travis CI

Change-Id: Ib6b50b951b44c2e4c1c510a3a3758ce7497a38bd
Use --always for tags

Change-Id: Ia9f11b37b43a47569971e5276bfefd6d94f66f75
mockserver: fix corrupt jar on py3

Change-Id: I1cc80a62bbcb16e298c31cb5167563d4ae2b5206