WIP: Init container for persisting kibana plugins.

[naemono]

No description provided.

[pebrc]

Should we reuse the existing init container for this? What is the overhead of adding another container?

[naemono]

Should we reuse the existing init container for this? What is the overhead of adding another container?

The problem with using the existing init container is that the init-config init container is always included in the pod, and the init-filesystem is only included when the version >= 7.10 and the flag for setting security context is enabled. I thought this would make the logic more straight-forward. I guess we could include some templating logic in the original init container to only include that block when enabled, and only include the volumes as well. I'll verify that the approach I'm taking is working, then I'll see about adjusting to use the original init.