Set default so full domain doesn't set to auto

Author: ayjayt

src/plots/cartesian/tick_value_defaults.js

@@ -25,8 +25,7 @@ module.exports = function handleTickValueDefaults(containerIn, containerOut, coe
         _dtick ? 'linear' :
         'auto';
     var tickmode = coerce(prefix + 'tickmode', tickmodeDefault);
-
-    if(tickmode === 'auto' || tickmode === 'sync') {
+    if(tickmode === 'auto' || tickmode === 'sync' || tickmode === 'full domain') {
         coerce(prefix + 'nticks');
     } else if(tickmode === 'linear') {
         // dtick is usually a positive number, but there are some