OpenShift route source: better use of route status

[alebedev87]

Description

• Use only those ingresses (status.ingress) which admitted the route
• Use host from status.ingress.host because it's
  • right place for the route's host
  • part of the preparation for the implementation of Route API's spec.subdomain field

Checklist

• Unit tests updated
• End user documentation updated

[alebedev87]

/assign @miheer @arjunrn

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/assign @miheer @arjunrn

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[alebedev87]

cc @miheer @arjunrn

[arjunrn]

Looks good to me other than a couple of nits and a small refactor.

[alebedev87]

/assign @seanmalloy

[seanmalloy]

/lgtm
/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: alebedev87, seanmalloy

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