SDN-5186: Add OVNObservability feature gate as Tech Preview.

[npinaeva]

This feature is planned as Tech Preview in 4.17 https://issues.redhat.com/browse/OCPSTRAT-488

[openshift-ci[bot]]

Hello @npinaeva! Some important instructions when contributing to openshift/api: API design plays an important part in the user experience of OpenShift and as such API PRs are subject to a high level of scrutiny to ensure they follow our best practices. If you haven't already done so, please review the OpenShift API Conventions and ensure that your proposed changes are compliant. Following these conventions will help expedite the api review process for your PR.

[openshift-ci-robot]

@npinaeva: This pull request references SDN-5186 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the story to target the "4.17.0" version, but no target version was set.

In response to [this](https://github.com/openshift/api/pull/1986): >This feature is planned as Tech Preview in 4.17 >https://issues.redhat.com/browse/OCPSTRAT-488 Instructions for interacting with me using PR comments are available [here](https://prow.ci.openshift.org/command-help?repo=openshift%2Fapi). If you have questions or suggestions related to my behavior, please file an issue against the [openshift-eng/jira-lifecycle-plugin](https://github.com/openshift-eng/jira-lifecycle-plugin/issues/new) repository.

[JoelSpeed]

/approve /lgtm

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: JoelSpeed, npinaeva

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[npinaeva]

/retest

[openshift-ci-robot]

/retest-required

Remaining retests: 0 against base HEAD b8f07e1d8f62e39e178859f0f3c3ce0e2449b279 and 2 for PR HEAD abce05220b923063fb377fed486397d9eecf3c33 in total

[openshift-ci-robot]

/retest-required

Remaining retests: 0 against base HEAD 3946b3623b58a20d7283488e4385a9c063435e1a and 1 for PR HEAD abce05220b923063fb377fed486397d9eecf3c33 in total

[npinaeva]

/retest

[openshift-ci[bot]]

@npinaeva: all tests passed!

Full PR test history. Your PR dashboard.

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[openshift-bot]

[ART PR BUILD NOTIFIER]

Distgit: ose-cluster-config-api This PR has been included in build ose-cluster-config-api-container-v4.17.0-202408060344.p0.ge65e6f5.assembly.stream.el9. All builds following this will include this PR.