CLI: make refresh_cache and request_timeout params global

[neomilium]

Considering the name of these parameters, they should be affect system-wide configuration but were set in root configuration file.
This commit fixes this unexpected behavior.

[neomilium]

Spec tests failed due to two reasons:

• I need to test that these parameters affect the right file (WIP)
• Some tests strictly verify that there are only the tested parameters, no more

IMHO, two possible behaviors, the configuration file can be filled by

• specified parameters only (so, I will allow undef on refresh_cache and refresh_timeout)
• all parameters, ie. including refresh_cache and refresh_timeout (so, I will add them to attempted configuration entries)

The question is what the foreman team prefers?

Note: If someone have a better direction, show me the way ;-)

[neomilium]

@ekohl Do you have any point of view on this? Who should I reach in Foreman about this topic?

[ekohl]

I would accept this change (provided tests pass).

[ekohl]

Thanks!