Updated the default namespace for operator

[houshengbo]

No description provided.

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: houshengbo

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[dprotaso]

/lgtm

@houshengbo should this be cherry picked

[dprotaso]

/cherry-pick release-1.17

[knative-prow-robot]

@dprotaso: new pull request created: #6212

In response to this:

/cherry-pick release-1.17

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[houshengbo]

/cherry-pick release-1.16

[houshengbo]

/cherry-pick release-1.15

[houshengbo]

/cherry-pick release-1.14

[knative-prow-robot]

@houshengbo: new pull request created: #6213

In response to this:

/cherry-pick release-1.16

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[knative-prow-robot]

@houshengbo: new pull request created: #6214

In response to this:

/cherry-pick release-1.15

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[knative-prow-robot]

@houshengbo: new pull request created: #6215

In response to this:

/cherry-pick release-1.14

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.