Migrate parallel reconciler to use messaging.* v1 resources

[nlopezgi]

Part of #3584

Proposed Changes

• Migrate parallel reconciler to use messaging.* v1 resources

[matzew]

test/conformance.TestBrokerV1Beta1ControlPlane/InMemoryChannel-messaging.knative.dev/v1/Ready_Trigger_V1Beta1_(no_Broker)_set_Broker_and_includes_status.subscriber_Uri
test/conformance.TestBrokerV1Beta1ControlPlane/InMemoryChannel-messaging.knative.dev/v1
test/conformance.TestBrokerV1Beta1ControlPlane

let's do a

/retest

[aliok]

/approve
/lgtm
/hold

Holding for others' review

[nlopezgi]

@aliok , @matzew thanks for the review. Tests are now passing and this is ready.

[aliok]

/unhold

Checked with Matthias.

[matzew]

/lgtm
/approve

[knative-prow-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aliok, matzew, nlopezgi

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• OWNERS [matzew]

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[nlopezgi]

/test pull-knative-eventing-conformance-tests

[nlopezgi]

/test pull-knative-eventing-unit-tests

[knative-test-reporter-robot]

The following jobs failed:

Test name	Triggers	Retries
pull-knative-eventing-conformance-tests		0/3
pull-knative-eventing-integration-tests	2020-08-06 15:58:50.099 +0000 UTC	1/3

Automatically retrying due to test flakiness...
/test pull-knative-eventing-integration-tests