FillEnabled/FillBefore/FillAfter have somewhat non-intuitive behavior.
The demo didn't work at all as intended, so I changed the animation resource
to reflect the actual behavior desired (delay starting the child animations
in the inner AnimationSet and avoid having those animations set the transform
before they start)
Change-Id: I135842091902ba243851dad0104f86e1b8605053
e3239b8d24