Merge pull request #1433 from metabase/driver-schema-support

resources/migrations/019_add_schema_column_to_table.yaml

resources/migrations/liquibase.json

src/metabase/db/migrations.clj

src/metabase/driver.clj

src/metabase/driver/generic_sql.clj

src/metabase/driver/generic_sql/query_processor.clj

src/metabase/driver/generic_sql/util.clj

src/metabase/driver/mongo.clj

src/metabase/driver/mysql.clj

src/metabase/driver/postgres.clj

src/metabase/driver/query_processor/annotate.clj

src/metabase/driver/query_processor/interface.clj

src/metabase/driver/query_processor/resolve.clj

src/metabase/driver/sync.clj

src/metabase/util.clj

test/metabase/api/database_test.clj

test/metabase/api/field_test.clj

test/metabase/api/table_test.clj

test/metabase/driver/generic_sql_test.clj

test/metabase/driver/mongo_test.clj