Convert resource templates from json to yaml
Yaml is easier and less error prone to modify by hand. It also allows
comments which can be especially useful in the templates.
Counting nodes in Ready state was too fragile, matching
entries like:
Ready,SchedulingDisabled
NotReady
By requiring whitespace on both side, we accept only clean Ready.
A "newbie style" deployment attempt was made on a recent
cluster, and some added notes in README and in label-nodes.sh
could help someone who just started with node-feature-discovery.
Correcting also description of label-nodes.sh which does not
deal with unlabeled nodes as was promised in README.
