Uncenter aod icons for new lockscreen

Also moves setup of aod icons to KeyguardStatusViewController
instead of through Status Bar => NotificationPanelViewController.

To enable the new lockscreen (value = 0 is disabled, value = 1 is enabled):
    adb shell settings put global show_new_lockscreen <value>

Test: atest NotificationIconControllerTest
Test: atest SystemUITests
Bug: 170228350
Change-Id: I93d19823620051e969e8790c8946bdc15a5ab379