satlab: TLS dockerd

Start Docker daemon on TLS secure tcp socket. Generate certs/keys on
boot time and put client's versions on a docker volume.

Redundant definitions across repos were removed - all variables are in
os-dependent/chromeos/upstart-scripts/moblab-dockerd.conf

BUG=b:197875817
TEST=Manually verified with Satlab with changes from all related CLs

Change-Id: Ife9837e5503b15d10f238e7f53279e0d5c0fd98b
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/moblab/+/5490442
Tested-by: Jacek Klimkowicz <klimkowicz@google.com>
Reviewed-by: Michal Matyjek <mmatyjek@google.com>
Commit-Queue: Jacek Klimkowicz <klimkowicz@google.com>
1 file changed