Default Deny Egress prevents Solrcloud from starting

[nickumia-reisys]

EKS Brokerpak @ https://github.com/GSA/datagov-brokerpak-eks/tree/113dfdac3399372b672f88145dc32470e47d5251

How to reproduce

1. Deploy EKS Cluster
2. Connect ssb-solrcloud to cluster.
3. Try to provision a solrcloud cluster.

Expected behavior

Solrcloud provisioning succeeded.

Actual behavior

Zookeeper cannot start because it fails a liveliness probe (probably initiated by the solr node)

Sketch

• Modify/Add a network policy in the datagov-brokerpak-solr repo to allow egress traffic within solrcloud cluster
• Figure out a way to test it. (Technically an integration test, but maybe just add a default deny egress policy to the datagov-brokerpak-solr repo to mirror the one that gets created in the datagov-brokerpak-eks repo.