fix(xapi.installSupplementalPackOnAllHosts): multi-pipe stream (#508)
fix(xapi.installSupplementalPackOnAllHosts): multi-pipe stream (#508)

Fixes vatesfr/xo-web#1957
lmcro/xo-web,lmcro/xo-web,vatesfr/xo-web,vatesfr/xo-web,lmcro/xo-web