TT#26264 Add systemd service wrappers for the init scripts

Properly switching to native systemd service files is too intrusive for
these services at this point of the release cycle. Let's use this hack
for now, and then convert these to the serveral .service, and .mount
units required.

Change-Id: I8f66bfd8be5924232bf2c34d42b18d2a332db3ee

debian/ngcp-rtpengine-daemon.service

@@ -0,0 +1,20 @@
+[Unit]
+Description=NGCP RTP/media Proxy Daemon
+After=network-online.target
+After=remote-fs.target
+Requires=network-online.target
+
+[Service]
+Type=forking
+Restart=no
+TimeoutSec=5min
+IgnoreSIGPIPE=no
+KillMode=process
+RemainAfterExit=yes
+SuccessExitStatus=5 6
+PIDFile=/run/rtpengine.pid
+ExecStart=/etc/init.d/ngcp-rtpengine-daemon start
+ExecStop=/etc/init.d/ngcp-rtpengine-daemon stop
+
+[Install]
+WantedBy=multi-user.target

debian/ngcp-rtpengine-recording-daemon.service

@@ -0,0 +1,20 @@
+[Unit]
+Description=NGCP RTP/media Recording Daemon
+After=network-online.target
+After=remote-fs.target
+Requires=network-online.target
+
+[Service]
+Type=forking
+Restart=no
+TimeoutSec=5min
+IgnoreSIGPIPE=no
+KillMode=process
+RemainAfterExit=yes
+SuccessExitStatus=5 6
+PIDFile=/run/ngcp-rtpengine-recording-daemon.pid
+ExecStart=/etc/init.d/ngcp-rtpengine-recording-daemon start
+ExecStop=/etc/init.d/ngcp-rtpengine-recording-daemon stop
+
+[Install]
+WantedBy=multi-user.target