In order to troubleshoot the fact that sometimes CICO
is not able to provide node, we need to display the inventoy
just before and after requesting a node.
If a node is freshly created but the CICO client still returns
"FATAL: no nodes were provisioned", then we'll can assume
that there is a bug in client.
If so, we'll be able to file a bug to CentOS Infra [1] with
some data.
[1] https://pagure.io/centos-infra/issues
Change-Id: I38f0f0de0d0b2b51204d1144478cb047b650f13a
32fbd01b4c