Code to check for query in SparkBigQueryConfig fails when SELECT is not followed by space

[chunyang]

The code in SparkBigQueryConfig which checks whether the user passed a query fails when SELECT is followed by a new line.

A query with this format works:

SELECT xyz, abc
FROM ...

A query with this format fails:

SELECT
    xyz, abc
FROM ...

with this error:

java.lang.IllegalArgumentException: Invalid Table ID 'SELECT
    xyz, abc
FROM ...'. Must match '^(((\S+)[:.])?(\w+)\.)?([\S&&[^.:]]+)$$'