cosmetic: tweak params of hlr_controlif_setup()

Cosmetically prepare for adding new CTRL commands in hlr_controlif_setup():
- drop unused 'gs' param.
- use ctrl_interface_setup_dynip2(), so far with default CTRL nodes; custom
  nodes will be added soon.

Prepares: I98ee6a06b3aa6a67adb868e0b63b0e04eb42eb50
Change-Id: I63004a7953b04988449697dbc5d55d7ed0c6d82d
3 files changed