Add Namespace indicator on Function page part of #1379

[Waterdrips]

Description

This is a precursor to adding a dropdown for namespaces
selection (#1379)

Signed-off-by: Alistair Hey [email protected]

Motivation and Context

• I have raised an issue to propose this change
• My issue has received approval from the maintainers or lead with the design/approved label
  [Feature] Namespace selector in UI #1379

How Has This Been Tested?

Deployed a self-built gateway (built using make, and push.sh) to my OF installation (by updating the deployment and checking it deployed my image)

Functions load, new namespace indicator is on the function detail page (see screenshot)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I've read the CONTRIBUTION guide
• I have signed-off my commits with git commit -s
• I have added tests to cover my changes.
• All new and existing tests passed.

[alexellis]

Approved

[alexellis]

Please run a rebase.

[alexellis]

LGTM