[Feature] CNF Installation (2.2), New config format generation

[kosstennbl]

Testsuite has useful generate_config functionality that allows users to generate basic config for their CNF without knowledge of all the parameters.

With update of config format - we need a new way of config generation. It should be able to create cnf-testsuite.yml for 3 basic deployment types containing all the required parameters (Deployment name, type-specific parameters).

New spec tests should also be added.