Reland "Update AIDL IVibrator manifest version to 2."

This is reverted in AOSP because vibrator 2 has not been published
in AOSP, but relanded in internal because vibrator 2 is in internal.

This reverts commit 9e8fe956.

Test: TH
Bug: 150034914

Change-Id: I3c40be3f9ba7806455bf5b7e8142e11c581ddb73