Add --ignore-loopback flag to exclude self-referential pod connections, updating cyclonus.

[yash97]

Issue #, if available:

Description of changes:

This PR introduces the --ignore-loopback=true parameter to exclude test cases where a network policy blocks a pod's connection to itself. Our network policy agent attaches tc cls hooks on the host veth side, not on the container's loopback interface. Consequently, self-referential connection tests may fail, as they don't accurately reflect our agent's behavior.

This flag allows for more accurate testing by focusing on inter-pod and external communications, aligning test results with our network policy agent's actual capabilities.

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[jaydeokar]

Can you check this against v6 too ? We also need to change the python script which we run to validate the results