Allow generating commatrix from csv and fix samples

[shirmoran]

The node role header of a commatrix in the csv format, defers from those of types json and yaml (Node Role instead of nodeRole). So, csv annotations in ComDetails struct were added.

The previous custom entries examples had some incorrect parameters which were fixed:

1. example-custom-entries.csv: NodeRole column was changed to Node Rule (as in the documented commatrix.
2. example-custom-entries.yaml and example-custom-entries.json: port was changed from a string to an int (9050 instead of "9050" for example).

a unit test applying the custom entries samples will be added in a separate PR.

[sebrandon1]

Minor comment about params