Updates related to Operator 6.0.0 release

Partially addresses #1273.

source/includes/k8s/deploy-operator.rst

@@ -48,8 +48,13 @@ Each pod runs three containers:
 - InitContainer that only exists during the launch of the pod to manage configuration secrets during startup.
   Once startup completes, this container terminates. 
 
-- SideCar container that monitors configuration secrets for the tenant and updates them as they change.
-  This container also monitors for root credentials and creates an error if it does not find root credentials. 
+- Sidecar container used to initialize the MinIO tenant.
+  The sidecar retrieves and validates the configuration for each tenant and creates the necessary local resources in the pod. 
+
+  .. versionchanged:: Operator 6.0.0
+
+     The Sidecar has its own image and release cycle separate from the rest of the MinIO Operator.
+     The MinIO Operator stores the tenant's environment variables in the sidecar, allowing the Operator to update the variables without requiring a rolling restart.
 
 Starting with v5.0.6, the MinIO Operator supports custom :kube-docs:`init containers <concepts/workloads/pods/init-containers>` for additional pod initialization that may be required for your environment.
 
@@ -104,7 +109,8 @@ Kubernetes TLS Certificate API
    - For :ref:`STS service <minio-security-token-service>` when :envvar:`OPERATOR_STS_ENABLED` environment variable is set to ``on``.
    - For retrieving the health of the cluster.
 
-   The MinIO Operator reads certificates inside the ``operator-ca-tls`` secret and syncs this secret within the tenant namespace to trust private certificate authorities, such as when using cert-manager.
+   Beginning with Operator 6.0.0, the MinIO Operator reads certificates inside the ``operator-ca-tls`` secret to trust private certificate authorities throughout the Kubernetes cluster, such as when using cert-manager.
+   Previous versions of the Operator sync the ``operator-ca-tls`` certificates to each tenant.
 
 For any of these circumstances, the MinIO Operator *requires* that the Kubernetes ``kube-controller-manager`` configuration include the following :kube-docs:`configuration settings <reference/command-line-tools-reference/kube-controller-manager/#options>`:
 

source/includes/k8s/file-transfer-protocol-k8s.rst

@@ -102,8 +102,6 @@ Procedure
             spec:
               configuration:
                 name: my-tenant-env-configuration
-              credsSecret:
-                name: my-tenant-secret
               exposeServices:
                 console: true
                 minio: true

source/operations/install-deploy-manage/upgrade-minio-operator.rst

@@ -42,7 +42,7 @@ The following changes apply for Operator v5.0.0 or later:
 - The ``.spec.s3`` field is replaced by the ``.spec.features`` field.
 - The ``.spec.credsSecret`` field is replaced by the ``.spec.configuration`` field.
 
-  The ``.spec.credsSecret`` should hold all the environment variables for the MinIO deployment that contain sensitive information and should not show in ``.spec.env``.
+  The ``.spec.configuration`` secret should hold all the environment variables for the MinIO deployment that contain sensitive information and should not show in ``.spec.env``.
   This change impacts the Tenant :abbr:`CRD (CustomResourceDefinition)` and only impacts users editing a tenant YAML directly, such as through Helm or Kustomize.
 - Both the **Log Search API** (``.spec.log``) and **Prometheus** (``.spec.prometheus``) deployments have been removed.
   However, existing deployments are left running as standalone deployments / statefulsets with no connection to the Tenant CR.