Add disable samples manifest to install

[tsatam]

Which issue this PR addresses:

Fixes ARO-14389

What this PR does / why we need it:

Extends the implementation of #4045 to additionally pass the disabling samples config as an install manifest to Hive/the installer. This ensures that the cluster is born with the Samples operator disabled, rather than waiting until the RP reaches its post-install step to do so.

The post-install step is still retained to absolutely ensure the operator is disabled after install when it needs to be.

Test plan for issue:

• E2E still passes
• Manually confirmed on a local installation that the necessary value is added to the manifests secret in the Hive installation cluster:

  $ kubectl get secrets -n ${CLUSTER_NS} cluster-manifests-secret -o jsonpath='{.data.cluster-config-samples\.yaml}' | base64 -d
  apiVersion: samples.operator.openshift.io/v1
  kind: Config
  metadata:
    creationTimestamp: null
    name: cluster
  spec:
    managementState: Removed
  status: {}
  

Is there any documentation that needs to be updated for this PR?

No

How do you know this will function as expected in production?

Above testing/validation

[tsatam]

/azp run ci

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