Needed so we can provide this workflow to customers following the proposal at https://github.com/openshift/enhancements/pull/1583

Reference https://issues.redhat.com/browse/WRKLDS-1015

pruners, guard-ip, installer pods are created by code residing in controllers provided by library-go. So changes are required in those controllers to add new mutation functions that add those tolerations: https://github.com/openshift/library-go/blob/f5bf38712dca48394702a9d59e18a3f95c0981b1/pkg/operator/staticpod/controller/installer/installer_controller.go 

Base manifests need to add tolerations: like inside https://github.com/openshift/library-go/blob/eb2f24c36528fe928b6611b2bf88a734e346fcb6/pkg/operator/staticpod/controller/guard/manifests/guard-pod.yaml#L15