Use table-level SerDe parameter for Avro partitions

[weijiii]

Description

Currently, MetastoreUtil::getHiveSchema(Partition, Table) does not include the table's storage descriptor when computing for partitioned tables. We have encountered some cases where Avro table only has schema properties (e.g. avro.schema.literal) stored in the table-level storage descriptor.

Release notes

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[weijiii]

@findepi Please take a look. Thanks!

[weijiii]

@anusudarsan @arhimondr All checks are passed. I think this is ready for review. Thanks!

[electrum]

This change looks fine. Is it feasible to write a test for it? If not, I'm fine to merge without one.

[weijiii]

This change looks fine. Is it feasible to write a test for it? If not, I'm fine to merge without one.

@electrum Thanks for the review!
After checking we see that this case is still present internally at Linkedin. I am not able to use Hive to reproduce such tables, but from the stance that these functions are to mimic the behavior in Hive, it will be complete if we can merge this.