ctrl2cgi: Add systemd service file and install with debian

Change-Id: I062ae5b9ed09f52b27c7d85b31daba0d14751846

contrib/systemd/osmo-ctrl2cgi.service

@@ -0,0 +1,11 @@
+[Unit]
+Description=Proxy between given GCI service and Osmocom CTRL protocol
+
+[Service]
+Type=simple
+Restart=always
+ExecStart=python3 /usr/bin/ctrl2cgi.py -o -d -c /etc/osmocom/ctrl2cgi.ini
+RestartSec=2
+
+[Install]
+WantedBy=multi-user.target

debian/python3-osmopy-utils.osmo-ctrl2cgi.service

@@ -0,0 +1 @@
+../contrib/systemd/osmo-ctrl2cgi.service

debian/rules

@@ -12,3 +12,8 @@ override_dh_auto_install:
 	rm -rf $(CURDIR)/debian/python3-osmopy-libs/usr/bin
 	python3 setup.py install --install-layout=deb --root=$(CURDIR)/debian/python3-osmopy-utils
 	rm -rf $(CURDIR)/debian/python3-osmopy-utils/usr/lib
+
+override_dh_installinit:
+	# Install service file with different name than package name:
+	# https://unix.stackexchange.com/questions/306234/is-it-possible-to-install-two-services-for-one-package-using-dh-installinit-how
+	dh_installinit --name=osmo-ctrl2cgi