
Adds a new scm.git choosing-strategy 'ancestry', corresponding to AncestryBuildChooser, and two new options if that strategy is selected, maximum-age and ancestor-sha1. Includes doc and test updates. Change-Id: Ib94f6100d4891b4196a6326c0678f638b4edbeab Signed-off-by: Dan Mick <danmick@gmail.com>