Re-removed openjdk8 from the Travis build as this seems not to work with the precise build
Re-removed openjdk8 from the Travis build as this seems not to work with the precise build

tomakehurst/wiremock,tricker/wiremock,dlaha21/wiremock,tricker/wiremock,Mahoney/wiremock,tricker/wiremock,dlaha21/wiremock,dlaha21/wiremock,tomakehurst/wiremock,tomakehurst/wiremock,dlaha21/wiremock,Mahoney/wiremock,tricker/wiremock,Mahoney/wiremock,dlaha21/wiremock,Mahoney/wiremock,tomakehurst/wiremock,Mahoney/wiremock,tricker/wiremock,tomakehurst/wiremock