[NbtkTable] Replace a deprecated option from dnd drop handler
[NbtkTable] Replace a deprecated option from dnd drop handler

"keep-aspect-ratio" is deprecated and can be implemented by ensuring the
x and y fill are false.

jonnylamb/mx,clutter-project/mx,clutter-project/mx,clutter-project/mx,clutter-project/mx,pwithnall/mx,jonnylamb/mx,pwithnall/mx,pwithnall/mx,jonnylamb/mx,jonnylamb/mx,pwithnall/mx