fix status updated: make sure ingress.status is copied

[ElvinEfendi]

What this PR does / why we need it:
#3474 among other things also changed how we store ingresses - since that PR we clone an Ingress object's attributes selectively and make use of that clone afterwards in the controller. While cloning we missed ing.Status field and status updates relies on this field at

ingress-nginx/internal/ingress/status/status.go

Line 360 in ee3a8fe

curIPs := ing.Status.LoadBalancer.Ingress

to make a decision whether it should update the status of given ingress. Since we don't copy this field, status updater will always see it as empty and will always try to update redundantly.

This PR fixes the issue by making sure the Status field is copied when we clone Ingress objet.

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

Special notes for your reviewer:

[aledbf]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aledbf, ElvinEfendi

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