NE-1112: Add Security Policy for Gateway API

[gcs278]

Update the Gateway API proposal to include the security policy as well as a new section on Gateway Topology.

[openshift-ci-robot]

@gcs278: This pull request references NE-1112 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 epic to target the "4.19.0" version, but no target version was set.

In response to this:

Update the Gateway API proposal to include the security policy as well as a new section on Gateway Topology.

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 openshift-eng/jira-lifecycle-plugin repository.

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
Once this PR has been reviewed and has the lgtm label, please assign candita for approval. For more information see the Code Review Process.

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• enhancements/ingress/OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[gcs278]

/assign @shaneutt

[openshift-ci]

@gcs278: all tests passed!

Full PR test history. Your PR dashboard.

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. I understand the commands that are listed here.