Support role management (v3)

[findepi]

This PR enables roles management through Presto.

It covers all the syntax explained here: Teradata#494

Although the PR is enormous - it can be reviewed and merged partially.

1. CREATE/DROP/LIST ROLES - commits through Introduce CREATE ROLE and DROP ROLE statements to Implement Create/Drop/List roles in Hive connector

2. GRANT/REVOKE ROLES - commits through Introduce GRANT/REVOKE roles statements to Prepare metastore interface to accept ROLE for GRANT/REVOKE

3. SET ROLE - commits through Introduce SET ROLE statement to Accept ROLE in GRANT/REVOKE Privileges statements

4. SHOW ROLES, SHOW CURRENT ROLES, SHOW ROLE GRANTS shortcuts - commits through Add SHOW ROLES to the parser to Access control for SHOW ROLE GRANTS and SHOW CURRENT ROLES

5. Consider role set with SET ROLE when checking permissions - commits through Remove redundant checkDatabasePermission methods to More product tests for SET ROLE

6. Roles management documentation - Document role management

Supersedes #9366