Add exclusion annotation for hosted deployments

[jonesbr17]

Configures the CVO to exclude manifests in deployments with external control planes
See openshift/cluster-version-operator#252

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[JoelSpeed]

Just to be very explicitly clear in my head, this is intended to not deploy the operator on hypershift guest clusters because something else will be deploying the CCM within the hypershift host cluster?

[jonesbr17]

After more discussion, it sounds like we won't be going down this path