Change the metrics port for OVN-Kubernetes

[pliurh]

Change the port number from 9101 to 9103 to avoid the port conflict during SDN migration.

Per #438 (comment)

[danwinship]

I think this is right and everything else just gets the metrics port from the Service definition rather than hardcoding it. Right, Jacob?
/approve
/assign @JacobTanenbaum
/test e2e-aws-ovn

[JacobTanenbaum]

@danwinship Yes, I believe that is how the metrics ports work now
/lgtm

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: danwinship, JacobTanenbaum, pliurh

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[openshift-ci-robot]

@pliurh: The following test failed, say /retest to rerun all failed tests:

Test name	Commit	Details	Rerun command
ci/prow/e2e-aws-ovn	91c1592	link	/test e2e-aws-ovn

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