pkg/asset: Rename ingress config

[Miciah]

• pkg/asset/manifests/ingress.go (Generate): Rename ingress config object from "default" to "cluster".

Per openshift/cluster-openshift-apiserver-operator#63 (comment).

@ironcladlou

With this change, we have the following:

% oc get ingresses.config.openshift.io/cluster -o yaml
apiVersion: config.openshift.io/v1
kind: Ingress
metadata:
  creationTimestamp: 2018-11-28T18:40:09Z
  generation: 1
  name: cluster
  resourceVersion: "202"
  selfLink: /apis/config.openshift.io/v1/ingresses/cluster
  uid: 0898a6c8-f33d-11e8-820c-06b750ec8402
spec:
  domain: apps.mmasters.devcluster.openshift.com
status: {}
% oc get ingresses.config.openshift.io/default -o yaml
Error from server (NotFound): ingresses.config.openshift.io "default" not found

[ironcladlou]

This should break openshift/cluster-ingress-operator#71 and openshift/cluster-openshift-apiserver-operator#63, correct?

[Miciah]

Correct, they will need to be amended.

[abhinavdahiya]

/approve

[abhinavdahiya]

/lgtm

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: abhinavdahiya, Miciah

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[Miciah]

/retest

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-ci-robot]

@Miciah: The following test failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
ci/prow/e2e-libvirt	9b0c84e	link	/test e2e-libvirt

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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