Merge "Validate package names passed to the installer." into sc-dev am: abbb9507

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/25676760



Change-Id: I3b77329a2c4b69ae9338e5967f5f001044b715e0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>