The layering of the cross containers is fixed to move arch specific
ccache setup out of the common base layer.
A missing Cirrus CI variable substitution is added, though this is
irrelevant given libvirt's package list.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
13eab52429