Updated: [rhinstaller/anaconda/pulls/574 master] Fix only one address is shown in anaconda (#1264400)

[dashea]

Only NMIP[4,6]Config object was connected to signal on change. But when inner objects (Addresses, Nameservers, Gateway) changed it doesn't notify us about this change.
Fix by connecting this inner properties too.

Resolves: *rhbz#1264400*

Reported-by: Marek Hruscak

Master/F24 version of https://github.com/rhinstaller/anaconda/pull/556 . On master we need to disconnect signals so more code was required here.

(cherry picked from commit b9323749c470ca3ef24bfee82f911a7b85d8f7fe)