Enable ipv6 in integration tests

[vishnoianil]

Describe the Problem Statement

To capture issues related to IPv6 and in general dual stack, we should skip disabling the IPv6 in integration tests.

https://github.com/nexodus-io/nexodus/blob/main/integration-tests/helper_test.go#L99

Describe the Enhancement

Ideally we should skip disabling IPv6 in integration tests and ensure that all tests pass. Alternatively we can add more integration test that does ipv6 specific testing.

Alternate Solutions

No response

Additional context

No response