Import Android SDK Platform-Tools 28 [4344336]

/google/data/ro/projects/android/fetch_artifact \
    --bid 4344336 \
    --target sdk_phone_armv7-sdk_mac \
    sdk-repo-darwin-platform-tools-4344336.zip

Pkg.Revision has been modified to appear as 28.0.0

Change-Id: Ie3c8c83864952bde5209230be6bef6b0c601a712