MT#55283 replace iptables

This package has been obsoleted and the functionality has been
incorporated into the primary daemon.

Change-Id: I7b4aea5c1b8c7ed1216b35e2e1a4f72c254d0303
(cherry picked from commit ec6b2c7563)

debian/control

@@ -64,6 +64,12 @@ Recommends:
  ngcp-rtpengine-utils,
 Suggests:
  ngcp-system-tools,
+Provides:
+ ngcp-rtpengine-iptables,
+Conflicts:
+ ngcp-rtpengine-iptables,
+Replaces:
+ ngcp-rtpengine-iptables,
 Pre-Depends:
  adduser,
  ${misc:Pre-Depends},