Gatekeeper: Exclude openshift namespaces

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/apps/core/policy/-/blob/3.10.0-bb.2/CHANGELOG.md

Package MR

https://repo1.dso.mil/big-bang/apps/core/policy/-/merge_requests/156

For Issue

Closes https://repo1.dso.mil/big-bang/apps/core/policy/-/issues/176