GitLab

Add a SwapSetParameter dbus message and then add a feature
with the corresponding parameter for changing min_filelist.

BUG=chromium:1014871
TESTED=On a betty VM CrOS image.

Change-Id: I2c875d0d2963fdbc253ae1c4419e6ad6794e5de0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1880966Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Reviewed-by: Jay Civelli <jcivelli@chromium.org>
Commit-Queue: Brian Geffon <bgeffon@chromium.org>
Cr-Commit-Position: refs/heads/master@{#710510}