Fix console db can't load attribute pool

Lists consoles failed when populate console_type from console
db's pool attribute. The reason was db api console_get_all_by_instance
didn't join with pool. So add param 'columns_to_join' for db api, and
join pool attribute when lists consoles.

Change-Id: I18b44860270a401c55cf02b4334b973fbf357b03
Closes-bug: #1223205
Merge "Fix console db can't load attribute pool"