Add QoSPolicyID to OpenstackCluster gateway settings

[spnngl]

/kind feature

Describe the solution you'd like
[A clear and concise description of what you want to happen.]
Be able to configure neutron ports with qos profile via id and/or filter.

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]
Something similar had been already filled here with a proposed solution here but seemed to have been abandoned