enyo.Input needs to call attributeToNode() when value changes to update ...

...the tag attribute.

If it doesn't call attributeToNode, the 'value' attribute on the Input tag is not updated when the user types into the Input node or when the associated Enyo Control's 'value' property is set.

Enyo-DCO-1.1-Signed-off-by: Matthew Gidcomb <matthew.gidcomb@airspringsoftware.com>