* NET-5397 - wire up golden tests from sidecar-proxy controller for xds controller and xdsv2
* WIP
* WIP
* everything matching except leafCerts. need to mock those
* single port destinations working except mixed destinations
* golden test input to xds controller tests for destinations
* proposed fix for failover group naming errors
* clean up test to use helper.
* clean up test to use helper.
* fix test file
* add docstring for test function.
* add docstring for test function.
* fix linting error
* fixing test after route fix merged into main
* first source test works
* WIP
* modify all source files
* source tests pass
* fixing tests after bug fix in main
* got first destination working.
* adding destinations
* fix docstring for test
* fixing tests after bug fix in main
* adding source proxies
* fixing tests after bug fix in main
* got first destination working.
* adding destinations
* fix docstring for test
* fixing tests after bug fix in main
* got first destination working.
* adding destinations
* fix docstring for test
* fixing tests after bug fix in main
John Murret