Remove --rm=true from sidecar container sync

Neutron uses kill-scripts which remove the container after stopping it.
If the container is launched with docker and --rm=true, the container
will automatically be cleaned up and the $(CLI) rm <container id> in the
kill script with error out because the container can't be found.

Related-Bug: #1858662
Change-Id: I3d7940cb0816adce58e0fa778469dcec95302f67

tripleo_ansible/roles/tripleo-systemd-wrapper/templates/service_sync.j2

@@ -26,7 +26,6 @@ function start_service {
         --net host \
         --pid host \
         --privileged \
-        --rm=true \
         -u root \
         --name $NAME \
         {{ tripleo_systemd_wrapper_image_name }} \