Refactor: controller: Add fsa_cib_conn to globals struct

Due to the long name and long method call patterns, there are a lot of
instances of locally aliasing "controld_globals.cib_conn" to just
"cib_conn". No big deal since it's local and easy to track.

Also moved the globals declarations to a new controld_globals.h file.
controld_utils.h was complaining that controld_globals was undeclared.

Ref T239

Signed-off-by: Reid Wahl <nrwahl@protonmail.com>