Currently all table etc. names are quoted in Cassandra.

This is due to the fact that Cassandra will lower-case all non-quoted names. Should we allow some configurability here? E.g. a user may prefer to work with a table "customer" instead of "\"Customer\"" for an entity Customer.

We also may raise a warning if the user has given no lower-cased table name and thus quoting/lowe-casing on OGM's end is required.

See the discussion in PR #613(https://github.com/hibernate/hibernate-ogm/pull/613#discussion_r49316487).