Update istio integration tests to account for removal of cacert field from config dump #50043
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Please provide a description of this PR:
This PR addresses the istio integration failures noticed here: #49964 (comment)
This was a result of the recent changes to migrate to rustls where a struct was modified in ztunnel and removed a field (ca_cert) that gets checked for an istio integration test called TestIntermediateCertRefresh.
Here is the struct in it's current state:
instead of:
This failure is preventing ztunnel from getting updated in istio.deps because the integration tests are failing. This should address the issue by pointing to the ca cert that resides in the cert chain as opposed to pointing to a field that no longer exists in this updated CertsDump struct.