Add the same mechanism I developed for the SwSS service in #2845 to the syncd service. However, in order to cause the SwSS service to also exit and restart in this situation, I developed a docker-wait-any program which the SwSS service uses to wait for either the swss or syncd containers to exit.
Under rules/config now there's additional configuration option
ENABLE_SYNCD_RPC that allows building SONIC installer with
docker-syncd-*-rpc for evaluation purposes.
Signed-off-by: marian-pritsak <marianp@mellanox.com>
