TT#44809 Create the _ngcp-api group

This package contains the ngcp-api tools, and should be in charge of
managing the matching group.

Change-Id: If94eec78bd5b413f6a25f807d9f3ccdeb5fab618

debian/ngcp-panel-tools.postinst

@@ -0,0 +1,21 @@
+#!/bin/sh
+set -e
+
+case "$1" in
+  configure)
+    addgroup --force-badname --system _ngcp-api
+    adduser www-data _ngcp-api
+  ;;
+
+  abort-upgrade|abort-remove|abort-deconfigure)
+  ;;
+
+  *)
+    echo "postinst called with unknown argument '$1'" >&2
+    exit 1
+  ;;
+esac
+
+#DEBHELPER#
+
+exit 0