[SQL] Add test case with workaround for reading partitioned Avro files

[marmbrus]

In order to read from partitioned Avro files we need to also set the SERDEPROPERTIES since TBLPROPERTIES are not passed to the initialization. This PR simply adds a test to make sure we don't break this workaround.

[SparkQA]

QA tests have started for PR 2340 at commit fea2124.

• This patch merges cleanly.

[SparkQA]

QA tests have finished for PR 2340 at commit fea2124.

• This patch fails unit tests.
• This patch merges cleanly.
• This patch adds no public classes.

[marmbrus]

Jenkins, test this please.

[SparkQA]

QA tests have started for PR 2340 at commit 6b969d6.

• This patch merges cleanly.

[SparkQA]

Tests timed out after a configured wait of 120m.

[marmbrus]

Jenkins, test this please.

[SparkQA]

QA tests have started for PR 2340 at commit 6b969d6.

• This patch merges cleanly.

[SparkQA]

QA tests have finished for PR 2340 at commit 6b969d6.

• This patch passes unit tests.
• This patch merges cleanly.
• This patch adds no public classes.