radv should be left alone during warm restart of swss. Otherwise it will
announce departure and cause hosts to lose default gateway.
Signed-off-by: Ying Xie <ying.xie@microsoft.com>
- Service unit file not getting generated because I changed the docker
container name from 'router_advertiser' to 'radv', however I didn't
rename the service unit file template name to match. However,
slave.mk generates a service file for every docker based on its
container name, and since there was no matching 'radv.service.j2'
template file, this file stopped getting generated and therefore
the docker container was never getting started.
- Also add swss.service to 'Requires'
