Support passing MB_VERSION from Travis to SnapCI
Support passing MB_VERSION from Travis to SnapCI

nassimkirouane/mountebank,p-equis/mountebank,nassimkirouane/mountebank,nassimkirouane/mountebank,p-equis/mountebank,bbyars/mountebank,p-equis/mountebank,nassimkirouane/mountebank,njenan/mountebank,njenan/mountebank,bbyars/mountebank,njenan/mountebank,njenan/mountebank