Support Sync of Postgres tables with dots in them

[Amogh-Bharadwaj]

Currently we do not have a way of discerning what the schema part of a table identifier in Postgres is - if the table name or schema name has a dot in it We need to figure out how to get the schema name as a separate object

[heavycrystal]

expand for supporting spaces and hyphens as well, tables and columns