Fix different invocations of check_fish

Particularly nodediscover register can fail.

Those invocations are XCC specific, so the targtype should not matter
in those cases.

confluent_server/confluent/discovery/protocols/ssdp.py

@@ -481,7 +481,11 @@ async def _find_service(service, target):
 async def check_fish(urldata, port=443, verifycallback=None):
     if not verifycallback:
         verifycallback = lambda x: True
-    url, data, targtype = urldata
+    try:
+        url, data, targtype = urldata
+    except ValueError:
+        url, data = urldata
+        targtype = 'service:redfish-bmc'
     try:
         wc = webclient.WebConnection(_get_svrip(data), port, verifycallback=verifycallback)
         peerinfo = await wc.grab_json_response(url, headers={'Accept': 'application/json'})