[deployment][provision][arvados-formula] remove @*--collections@ and use @*.collections@
As part of a deployment we found out that the format
*--collections is hard to implement in DNS, as wildcards in DNS need to replace a whole label or will be considered literals (see RFC 4592 , Wikipedia , or DNS providers for more details).
To avoid adding confusion, we should do deployments using the
As the wildcard certificate through Letsencrypt can only be obtained using the DNS method, the provision script should consider it, document it or fail.