[automerger skipped] setupdesign minsdk bump from 19 to 21 am: c1117bf174 -s ours

am skip reason: Merged-In I46302d5af424e666e2f666478afe9adf2b480b65 with SHA-1 8a0bee1ab1 is already in history

Original change: https://android-review.googlesource.com/c/platform/external/setupdesign/+/3146161

Change-Id: I1c42cd71ad9a92d5cfc5e1d462705e82b640754d
Signed-off-by: Automerger Merge Worker <[email protected]>