ANSI Schema changes

    ANSI Schema

    Implements the changes to support ANSI schemas.  For more information
    see the blueprint at:
    https://blueprints.launchpad.net/trafodion/+spec/security-ansi-schemas

    The syntax changes for REGISTER USER and CREATE ROLE were not
    implemented in this delivery.

    NOTE: This code was reviewed internally prior to merging with the
    main branch.

    Change-Id: I1c7937dbcd067e792dcacb65f12c43e4f84a25ad

Change-Id: I98395eeef1e8bde424d9e83f96928358f0b1991b
Merge "ANSI Schema changes"