The python-builder base image was updated to no longer install
recommends. This is inline with the other Infra images and keeps
image sizes smaller. gcc recommended libc6-dev - but it turns out
we need that for limits.h for one of our depends. Add it to fix
our image builds.
Change-Id: I97950d71bc455c269490812c6597fbe432641733
We're missing one of these, which means starting from a bare node
it's not completely possible to install openstackclient based only
on bindep and pip. Add one that allows building and installing.
Change-Id: I7b297bb1485773df3d5d1cc3ba78b0b9af4b2d00
