The current configuration derives the sidecar image from configuration paramter `sidecar-image`: 1e13020fe5/internal/cnpgi/operator/lifecycle.go (L418)
However, this is challenging for multi-tenant Kubernetes clusters, as the plugin deployment defines the target sidecar image for all CNPG clusters within a given Kubernetes cluster.
In this PR, we add an optional `sidecarImage` field to `ObjectStore.spec.instanceSidecarConfiguration`.
This allows workloads using a specific ObjectStore to override the Barman Cloud sidecar image configured globally on the plugin deployment.
Signed-off-by: Chandon Pierre <cpierre@coreweave.com>
