Improvements
- SolrClouds now support namespace sharing among pod containers in a pod.
- SolrClouds now support auto-readOnlyRootFilesystem setting.
- 'imagePullSecret' now used when fetching operator image, if provided.
- SolrCloud now accepts container-level securityContext settings for Solr container.
Bug Fixes
- gen-pkcs12-keystore initContainer now supports 'ca.crt'-less TLS secrets
- setup-zk initContainer now gracefully handles absent security.json on initial upload.
- The operator will now delete ingress and per-node services when external ingress is disabled.