UCP/WIREUP/CM: handle connection request from uninitialized device

If listener is stared on any address and device is configured after UCP
initialization, client can try to connect to new available address but
server is not able to handle it, so print error and return unreachable
status.

src/ucp/wireup/wireup_cm.c

@@ -729,6 +729,16 @@ ucp_ep_cm_server_create_connected(ucp_worker_h worker, unsigned ep_init_flags,
     const ucp_address_entry_t *address;
     ucp_ep_h ep;
     ucs_status_t status;
+    char client_addr_str[UCS_SOCKADDR_STRING_LEN];
+
+    if (tl_bitmap == 0) {
+        ucs_error("listener %p: got connection request from %s on uninitialized device %s",
+                  conn_request->listener,
+                  ucs_sockaddr_str((struct sockaddr*)&conn_request->client_address,
+                                   client_addr_str, sizeof(client_addr_str)),
+                  conn_request->dev_name);
+        return UCS_ERR_UNREACHABLE;
+    }
 
     ucp_unpacked_address_for_each(address, remote_addr) {
         num_remote_ep_addrs += address->num_ep_addrs;