Impala does not always generated fully qualified table names in audit events

Impala sometimes will generate an entry in the audit log that doesn't contain fully qualified table names, thereby breaking Navigator as it always expects fully qualified names.

To reproduce:

hive> create table foo (a int, b date) stored as avro; <--- table that can't be loaded in Impala and results in a TableLoadingException
impala> invalidate table foo;
impala> drop table foo;