add el-primitivo postinst script

debian/postinst

@@ -0,0 +1,25 @@
+#!/bin/sh
+# postinst script for cleanup-tools
+
+set -e
+
+case "$1" in
+    configure)
+      mkdir -p /var/backups/cdr 2> /dev/null || true
+    ;;
+
+    abort-upgrade|abort-remove|abort-deconfigure)
+    ;;
+
+    *)
+        echo "postinst called with unknown argument \`$1'" >&2
+        exit 1
+    ;;
+esac
+
+# dh_installdeb will replace this with shell code automatically
+# generated by other debhelper scripts.
+
+#DEBHELPER#
+
+exit 0