Fixes #2948 - added sp_* host attributes to safe mode

[lzap]

Also few related changes:

• added facts alias for facts_hash
• exported facts attribute via safemode
• removed extra attribute (was there twice: location)

I would like to backport this into 1.7 for Discovery 2.0.

[dLobatog]

👍 , I will add these (and remove the duplicated location) to the HostJail test on merge. 3..2..1 💣

[dLobatog]

Merged as 13d9564, thanks @lzap!

I've added these methods to the jail test, although in a future refactor PR I think we can do without it. We're testing Safemode functionality instead of Foreman's functionality here, it's as ridiculous as doing

assert Host::Managed::Jail.allowed_methods.map { |m| Host::Managed::Jail.allow?(m) }.uniq.first

[lzap]

@domcleal ping me if you want me to rebase/cherry pick thanks

[domcleal]

already done: faeca37

[lzap]

Thank you @domcleal !