RBAC privileges

[flaneur2020]

Summary

Tasks

• [RBAC] add client to manage role data #3877
• Role Management #2815
• [RBAC] cache the roles data #3799
• [RBAC] Display roles info on SHOW GRANTS #4187
• [RBAC] Allow grant/revoke privilege from/to Role #4193
• [RBAC] Allow grant role to user/role #4201
• [RBAC] ALTER ROLE [ IF EXISTS ] RENAME TO <new_name> #4202

references:

• https://dev.mysql.com/doc/refman/8.0/en/roles.html
• https://docs.snowflake.com/en/user-guide/security-access-control-privileges.html

[flaneur2020]

/assignme

[BohuTANG]

Add:

• Role Management #2815