Support changing between ephemeral and persistent storage

[sagar2297]

Hello,

I have configured solr on K8s using the steps in the following link,
https://apache.github.io/solr-operator/docs/local_tutorial.html#install-the-solr-operator

The solr setup is properly done. To change the dataStorage configuration in SolrCloud CRD, which is by default set as ephemeral

I changed it as per this documentation(https://apache.github.io/solr-operator/docs/solr-cloud/solr-cloud-crd.html#data-storage)
to following:

But, once I change the dataStorage type, pod creation starts failing as below:

Can you please highlight what could be missing or wrong?