Revert to depricated Travis image for OpenJDK7 build
Revert to depricated Travis image for OpenJDK7 build

danilovesky/workcraft,workcraft/workcraft,workcraft/workcraft,tuura/workcraft,jrbeaumont/workcraft,tuura/workcraft,danilovesky/workcraft,jrbeaumont/workcraft,danilovesky/workcraft,workcraft/workcraft,danilovesky/workcraft,workcraft/workcraft,tuura/workcraft,jrbeaumont/workcraft