* Netconf as default namespace has been disabled by default.

* Only requests on the form: `<rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0"><edit-config>...` will be accepted
  * All replies will be on the form: `<rpc-reply xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">...`
  * Requests such as: `<rpc><edit-config>...` will not  be accepted.
  * You can revert this behaviour (to clixon pre-4.6 behaviour) by enabling `CLICON_NAMESPACE_NETCONF_DEFAULT`
  * This API change is a consequence of: [copy-config's RPC cxobj parameter does not contain namespace #131](https://github.com/clicon/clixon/issues/131)

apps/restconf/restconf_main_evhtp.c

@@ -763,6 +763,9 @@ main(int    argc,
 	clicon_err(OE_DAEMON, EINVAL, "Restconf bind port is 0");
 	goto done;
     }
+    /* Set default namespace according to CLICON_NAMESPACE_NETCONF_DEFAULT */
+    xml_nsctx_namespace_netconf_default(h);
+    
     /* Check server ssl certs */
     if (use_ssl){
 	/* Init evhtp ssl config struct */