test: skip OSCI gating AVC test

[henrywang]

Skip in TMT test to avoid duplicate with downstream

[gemini-code-assist]

Code Review

This pull request removes the AVC_ERROR environment variable from the integration plan and adds an AVC check configuration to the tests file to handle expected SELinux denials. A critical review comment points out that the tests file is auto-generated and should not be edited directly; the changes must instead be implemented within the generator script to prevent them from being overwritten.

[cgwalters]

The test failures here are really strange, I don't understand how this PR could have triggered them. Unless there's some kind of race somehow, like we installed with an older image?

[henrywang]

The test failures here are really strange, I don't understand how this PR could have triggered them. Unless there's some kind of race somehow, like we installed with an older image?

The failure is in the prepare phase - tmt's essential-requires step is trying to install audit, policycoreutils on the VM. These are dependencies of the check: how: avc plugin.

Tricky thing is even though the check is enabled: false, tmt still installs the plugin's essential requirements.