tasks: lxc_container_create: Retry LXC start on failures
tasks: lxc_container_create: Retry LXC start on failures

Sometimes a container may fail to start so retry a few more times before
giving up. This also helps with capturing problems as soon as possible
since the restart handler expects the container to be up and running.

Change-Id: I9ce80ad882200eb4163fcce1c07c3b0a0e3a1fe5

openstack/openstack-ansible-lxc_container_create,openstack/openstack-ansible-lxc_container_create