Support select from temp tables

As reported in the dev list, the following currently fails:

val jdf = spark.readStream.format("kafka").option("kafka.bootstrap.servers", "localhost:9092").option("subscribe", "join_test").option("startingOffsets", "earliest").load();

jdf.createOrReplaceTempView("table")

val resultdf = spark.sql("select * from table")

resultdf.writeStream.outputMode("append").format("console").option("truncate", false).trigger(Trigger.Continuous("1 second")).start()