northd: take into account qos_min_rate in port_has_qos_params

Similar to qos_max_rate and qos_burst, take into account qos_min_rate in
port_has_qos_params routine.

Fixes: dbf12e5 ("qos: add support for port minimum bandwidth guarantee")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Acked-by: Ihar Hrachyshka <ihrachys@redhat.com>
Signed-off-by: Dumitru Ceara <dceara@redhat.com>

northd/northd.c

@@ -559,7 +559,7 @@ free_chassis_queueid(struct hmap *set, const struct uuid *uuid,
 static inline bool
 port_has_qos_params(const struct smap *opts)
 {
-    return (smap_get(opts, "qos_max_rate") ||
+    return (smap_get(opts, "qos_max_rate") || smap_get(opts, "qos_min_rate") ||
             smap_get(opts, "qos_burst"));
 }