net: pass monitor handle to client init functions

Needed for e.g. looking up a file descriptor name using
monitor_get_fd() in net_init_tap()

Patchworks-ID: 35509
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

net.c

diff --git a/net.c b/net.c
index e93017d..898b9af 100644
--- a/net.c
+++ b/net.c
@@ -3021,7 +3021,7 @@
             }
 
             if (net_client_types[i].init) {
-                return net_client_types[i].init(opts, NULL);
+                return net_client_types[i].init(opts, mon);
             } else {
                 return 0;
             }