🌱 Update FloatingIPPool to use v1beta1

[mdbooth]

Also make IdentityRef required, as it doesn't currently permit fallback to cluster credentials.

cc @bilbobrovall @huxcrux

/hold

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mdbooth

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[mdbooth]

size/L. I'm guessing that means either it didn't work, or the .gitattributes change isn't applied to this PR. The non-generated diffstat is actually:

api/v1alpha1/openstackfloatingippool_types.go     | 18 +++++-------------
controllers/openstackfloatingippool_controller.go |  7 +++----
pkg/scope/provider.go                             | 12 +++---------
3 files changed, 11 insertions(+), 26 deletions(-)

[mdbooth]

/test pull-cluster-api-provider-openstack-e2e-full-test

[huxcrux]

/lgtm

[dulek]

/lgtm

[mdbooth]

/hold cancel