[Relayout logging]: Allow relayout logs to be logged

Currently, session side doesn't recieve information about updated
autofill ids. As such, we don't have information about eligible
datatests for the new autofill id. This will be addressed in
future when we address save for relayout cases. Meanwhile, we allow
relayout logs to be logged.

Test: m; statsd_testdrive 469
Flag: EXEMPT bugfix
Bug: 365801998
Change-Id: I22c722c85259f4776b87763bdbebb5b1d752541b