Make 5.1.0 content not default in installers

This is a left-over from 9fc8af2bbea0c4ab156821cafc8ce0048187088c

Change-Id: I2c99f822b4cc77c0670fd312d75f3b124c88498a
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>