Deploying solr with zk operator makes it unavailable for writing apps outside of the cluster out of the box

[Ella-eln]

Pravega's zk operator only allows to expose adminserverservice as external out of the box. Solr itself does not have a problem with it, however, it creates a problem when trying to write data into solr from multiple locations. (any app not deployed on the same cluster won't be able to get a list of living nodes from the zk)

As was mentioned in the open issue: pravega/zookeeper-operator#572

I know that pravega's zk operator is relatively stale so I was wondering if anyone has experienced this problem before and how would you recommend takling it going forward