move logic from API function to Cloubed class

All the logic that was included in functions of the external API has been
encapsulated in Cloubed class for future factoring.
new cloubed executable script

This commit introduces a new cloubed script that should help use Cloubed
software without the need to write a python script against the external API.

Cloubed can now be used easily in shell scripts.
provide example of shell script for debian

New shell script that use new cloubed script has been added to provide an
example for debian testbed.