Additional node-exporter modules - zoneinfo

Following the 4.14 release, there is now the ability to enable collectors in the node_exporter configuration 

https://github.com/openshift/cluster-monitoring-operator/blob/master/Documentation/openshiftdocs/modules/nodeexportercollectorconfig.adoc

This a request to add an additonal collector - zoneinfo 

zoneinfo  - Exposes NUMA memory zone metrics.