Import intermediate-AndroidX Design Library from local Maven ZIP

Library Updates
* Slider
  Added a warning message if the stepSize or any values are set to float values with a decimal to suggest using integers.
  Fixed the validation of the slider step size and values.
  Added XML enabled property to constructor attrs evaluation
* BottomSheet
  Fixed issue where peekHeight is more than the height of the contents
  Changed bottom gesture inset handling to ensure a minimum peek height with a buffer built in, instead of always adding the inset to the peek height (when gesture nav is enabled)
  Added missing defensive checks to viewDragHelper calls
* Transitions / Motion
  Removed internal listener from container transform after transition ends.
  Improved MaterialContainerTransform approximation of native elevation shadows by using location of bounds on screen
  Fixed shadows for non round rects
* MaterialCardView
  Fixed NPE if android:onClick is defined in the layout
* NavigationView
  Fixed obtaining Activity in setupInsetScrimsListener
* Other
  Removed re-throw of exception on ViewOverlayApi14

Release note from
https://github.com/material-components/material-components-android/releases/tag/1.2.1

./update_prebuilts.py -m /usr/local/google/home/cyrillee/Downloads/maven_release.zip

Test: make ANDROID_BUILDSPEC=vendor/google/build/app_build_spec.mk -j3
Change-Id: I4469c2dd807ba515934acaee2ee7fcf4022cbf12
30 files changed