Merge "CDD: Clarify that when we require the new v2 signing, it doesn't remove      the jar signing support.            JAR signing has been always supported and from Android N onwards,      APK Signature Scheme v2 support was added. So requiring support      for both." into nougat-mr1-dev am: 563132e023 am: 3fdf3d2ff5
am: 1a5764d67f

Change-Id: Ie5e686da9f61afed60f765a679374114ab98b0d7