[SRVKS-911] Deploy config-network configmap into knative-serving-ingress namespace

[nak3]

This patch is an alternative solution for SRVKS-911.

Since upstream net-kourier controller starts watching config-network
configmap. The configmap and controller must be deploeyd in the same
namespace.

Initially I tried to move net-kourier into knative-serving namespace
as #1483 but deploy config-network in the ingress namespace is much simpler.

[nak3]

/cc @skonto @rhuss

[nak3]

/retest

Eventing error log

[nak3]

@skonto @rhuss Would you mind taking a look? This change needs the future version (Knative 1.25) but no harm to merge beforehand.

[skonto]

/retest

[skonto]

@nak3

This change needs the future version (Knative 1.25) but no harm to merge beforehand.

Do you mean 1.2.5?

/lgtm

When tests pass will merge.

[nak3]

Do you mean 1.2.5?

Ah sorry, it means Serverless 1.25 (Knative 1.4).

[skonto]

Failed  === RUN   TestServerlessUpgrade/VerifyContinualTests/KafkaSinkSourceContinualTest
2022-05-12T13:38:42.651Z	INFO	upgrade/steps.go:95	8.7) Verifying "KafkaSinkSourceContinualTest".
2022-05-12T13:38:42.670Z	INFO	upgrade/functions.go:110	KafkaSinkSourceContinualTest have received a stop event: Stop of KafkaSinkSourceContinualTest
2022-05-12T13:38:42.671Z	INFO	prober/sender.go:95	Remove of sender deployment: wathola-sender
2022-05-12T13:38:48.710Z	INFO	prober/verify.go:64	Waiting for complete report from receiver...
2022-05-12T13:38:48.710Z	INFO	prober/verify.go:231	Deploying

@pierDipi seen this before?

[nak3]

(Just Rebased)

[skonto]

/lgtm

[openshift-ci]

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