Configure new and/or update existing volumes

[brainstorm82]

Proposal

Make it possible to add additional volumes to the pods. And make it possible to modify existing volumes, such as emptyDirs (bin)

Use-Case

It is needed in order to enable readOnlyRootFilesystem in the securityContext. In that case a new volume tmp needs to be added to the pod.
Moreover, it would be good if the sizeLimit on emptyDirs can be set to satisfy further security restrictions.

Is this a feature you are interested in implementing yourself?

No

Anything else?

Environment

• mongo-operator version 1.18.0