meta-romulus: Set RemainAfterExit for phosphor-cooling-type service

The service phosphor-cooling-type is required by multi-user.target and
thus will be started by default. In case multi-user.target is started
for multiple times, this service will be startd for multiple times as
well, and eventually get start-limit-hit failure.

This commit adds RemainAfterExit=true so the service will be treated as
started and thus will not be started for multiple times.

Resolves openbmc/openbmc#3544

Tested: Reboot Romulus BMC when the host is on, and verify the BMC gets
        READY state after reboot.

Change-Id: Ic751a81ba79aab6750974f090d783c4138b08846
Signed-off-by: Lei YU <mine260309@gmail.com>
1 file changed