Summary:
The yb.port.privileges test involves LOCK TABLE statements. Previously, table-level locks were not supported in YugabyteDB, so these statements would fail with:
```
LOCK atest2 IN ACCESS EXCLUSIVE MODE; -- ok
ERROR: ACCESS EXCLUSIVE not supported yet
LINE 1: LOCK atest2 IN ACCESS EXCLUSIVE MODE;
^
HINT: Please report the issue on https://github.com/YugaByte/yugabyte-db/issues
```
Now that table-level locking is supported, this diff enables LOCK TABLE functionality for the test and updates the yb.port.privileges.out file to reflect the expected behavior where LOCK TABLE works as intended.
Jira: DB-16936
Test Plan: ./yb_build.sh --java-test 'org.yb.pgsql.TestPgRegressPgAuth#schedule'
Reviewers: bkolagani, pjain, rthallam, jason
Reviewed By: bkolagani, rthallam, jason
Subscribers: ybase, rthallam, yql
Differential Revision: https://phorge.dev.yugabyte.com/D44367