Restrict grant to/from any babelfish created role

[shalinilohia50]

Description

Block Granting Fixed DB Roles to another Fixed DB role via PG port.
All fixed server roles and database roles have 'bbf_role_admin' as its member. Added a check to identify if 'bbf_role_admin' is a member of any role in addition to the existing checks to avoid granting fixed db/server roles to another fixed db/server roles.

Issues Resolved

Task: BABEL-5505
Signed-off-by: Shalini Lohia lshalini@amazon.com

Test Scenarios Covered

• Use case based -
• Boundary conditions -
• Arbitrary inputs -
• Negative test cases -
• Minor version upgrade tests -
• Major version upgrade tests -
• Performance tests -
• Tooling impact -
• Client tests -

[coveralls]

Pull Request Test Coverage Report for Build 12683264327

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 6 of 6 (100.0%) changed or added relevant lines in 1 file are covered.
• 57 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.008%) to 74.89%

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Files with Coverage Reduction	New Missed Lines	%
contrib/babelfishpg_tds/src/backend/tds/tdsutils.c	57	72.6%

Totals
Change from base Build 12672066046:	-0.008%
Covered Lines:	46667
Relevant Lines:	62314

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💛 - Coveralls