restconf bugs and increased restconf testing

apps/restconf/restconf_methods.c

@@ -171,6 +171,7 @@ api_data_get_gen(clicon_handle h,
     yspec = clicon_dbspec_yang(h);
     if ((path = cbuf_new()) == NULL)
         goto done;
+    cprintf(path, "/");
     if (api_path2xpath_cvv(yspec, pcvec, pi, path) < 0){
 	notfound(r);
 	goto done;