Enable remote animation for keygaurd going away.

Disable remote animation for keyguard transition.
% adb shell setprop persist.wm.enable_remote_keyguard_animation 0

Enable remote animation only for keyguard going away transition
(default).
% adb shell setprop persist.wm.enable_remote_keyguard_animation 1

Enable remote animation for both keyguard going away and (un)occlude
transition.
% adb shell setprop persist.wm.enable_remote_keyguard_animation 2

Bug: 166736690 185616888
Test: Pass existing tests.
Change-Id: Ia40e3325a9f22ce108f36c7111a92b514ce4fa19