Add wayland fullscreen feature

Pull from gst-plugins-bad1.0 1.15.1
https://bugzilla.gnome.org/show_bug.cgi?id=688190

Since we set the default display mode to 720p, we need to add this
support so the edgetpu_{detect, classify, demo} won't have the display
cut off.

Change-Id: I81bdf5a47d05e077ebdea7d309f34d927d870ec3