amq pod's both operator and router deployment need the corresponding annotation in order to be allocated to the management cores:
target.workload.openshift.io/management: '

'

For example PTP operator and pod deployment
pod

https://github.com/openshift/ptp-operator/blob/984084ab6eb8814027b54b79482655374067fe2e/bindata/linuxptp/ptp-daemon.yaml#L20

operator
----------------
https://github.com/openshift/ptp-operator/blob/984084ab6eb8814027b54b79482655374067fe2e/config/manager/manager.yaml#L22