feat(build): use xenial dist as travis CI image
feat(build): use xenial dist as travis CI image

Signed-off-by: prateekpandey14 <b9840ec9e5d2558873c20ce65666d5e6288e967d@gmail.com>

AmitKumarDas/maya,openebs/maya,prateekpandey14/maya,AmitKumarDas/maya,openebs/maya,prateekpandey14/maya,openebs/maya