cp-solr-xml Init Container Does Not Set readOnlyRootFilesystem: true

[karatkep]

The cp-solr-xml init container currently does not configure readOnlyRootFilesystem: true. However, this container does not appear to require a writable root filesystem for its functionality.

As a result, the container is not adhering to Kubernetes security best practices, which recommend setting readOnlyRootFilesystem: true for containers that do not need write access to their root filesystem. This helps to reduce the attack surface and improve overall security by preventing potential unauthorized write operations.