net: add `net tdb smbXsrv wipedbs` alias for `net serverid wipedbs`

net: add `net tdb smbXsrv wipedbs` alias for `net serverid wipedbs`

`net serverid` is imho not the right place for the wipedbs functionality. Add
it as an alias to `net tdb`. It works pretty opaque and unless you run

 # net tdb smbXsrv wipedbs --help
 Usage:
 net serverid wipedbs [--test] [--verbose]
 Example:
 net serverid wipedbs -v

the use won't notice it is an alias.

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>