Previously ceph-exporter would only bind to IPv4 interfaces. Now if the
CephCluster is configured with `dualStack: true` and/or `ipFamily: IPv6`
an additional flag (`--addrs ::`) will be added to the ceph-exporter
container to make it listen both IPv6 and IPv4 interfaces.
Signed-off-by: Matthew Penner <me@matthewp.io>