Update version name for DF2 release
Update version name for DF2 release

Version code: 501
Version name: 5.0 Alpha 2

Change-Id: I3da6a7cac606164cc99e6fdcd90acfa75b57e006

jarekankowski/iosched,WeRockStar/iosched,WeRockStar/iosched,WeRockStar/iosched,jarekankowski/iosched,jarekankowski/iosched