When checking for build changes it'd be good to know when a user has been add/removed/changed. This would help to avoid https://bugzilla.yoctoproject.org/show_bug.cgi?id=4153 to happen again.
Merged to master: http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=e42f0acf46897515ae14c3b3c12632ccb2a378f2
Verified in: poky master:2f64fae60b3f61a2c45dc9e5314d2d16b1e64605