optionally restore from non-active vbuckets in mbrestore

In some disaster recovery situations, it is desirable to restore data from vbuckets marked as dead or otherwise non-active in a node's data files. Currently this means modifying mbrestore, changing the SQL query to remove or modify the "vb.state like 'active'" part of the where clause.

This should be an option to mbrestore. Perhaps something like mbrestore ... --vbucket-state=ANY or --vbucket-state=active,dead