aten_pdu: Try to get full hosntname for mqtt pub

roles/aten_pdu/files/aten-mqtt-publish.sh

@@ -51,6 +51,23 @@ do
                 continue
                 ;;
         esac
+        if device_name="$(ldapsearch -Q -LLL cn="${device}.*" cn | awk "
+            {
+                if (\$1 == \"cn:\") {
+                    if (name) {
+                        exit 1
+                    }
+                    name=\$2
+                }
+            } END {
+                if (!name) {
+                    exit 1
+                }
+                print name
+            }
+        ")" ; then
+            device="$device_name"
+        fi
         for key in Current Power Voltage ; do
             topic="home/${location}/${device}/$(echo "$key" | tr '[:upper:]' '[:lower:]')"
 	    value="$(snmp_get "$name" "ATEN-PE-CFG::outlet${key}.${port}")"