Revert "Move to 2.2.0-alpha3 gradle plugin"
Revert "Move to 2.2.0-alpha3 gradle plugin"

This reverts commit 6bf077cd8fe719c53ac968d385ed405b98fbda0b.

Change-Id: I8ed360d6a7e01d58187107165140bc62e4c450be

aosp-mirror/platform_frameworks_support,AndroidX/androidx,androidx/androidx,aosp-mirror/platform_frameworks_support,androidx/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,aosp-mirror/platform_frameworks_support,androidx/androidx,aosp-mirror/platform_frameworks_support,AndroidX/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,aosp-mirror/platform_frameworks_support,androidx/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx