Kleaf: add .source_date_epoch_dir

This is required to determine SOURCE_DATE_EPOCH.

Bug: 194772369
Test: builds
Change-Id: I578e27523990ec5fa7240b08a90a22738fca259b
1 file changed
tree: 3ded0a1a745ee4c01cb45bff8d0358fe920d8a30
  1. default.xml