Bug#1055625: pyzoltan: FTBFS (not enough slots available)

[Santiago Vila]

# Also happens in bullseye
found 1055625 1.0.1-2
tags 1055625 + bullseye
owner 1055625 !
thanks

This happens even when using r6a.large instances from AWS,
which have 2 vCPUs. I'll try to fix this for bullseye.

Thanks.