Added Traefik as an available ingress controller

[MattLeach25]

PR Summary

Added Traefik as an available ingress controller to postdeploy script and options in the GUI.

Fixed a bug with NGINX where the helm chart would deploy, however there was no pods or services deployed. This turned out to be a typo within the postdeploy script.

This PR covers feature #96

PR Checklist

• PR has a meaningful title
• Summarized changes
• This PR is ready to merge and is not Work in Progress
• Link to a filed issue
• Screenshot of UI changes (if PR includes UI changes)

[Gordonby]

@MattLeach25 Looks good to me.

Just make sure to add traefik to the cspell dictionary (cspell.json)

@khowling - Can you take a look?

[Gordonby]

LGTM - But i'll let Keith provide the final approval for merge.

[khowling]

Hey Matt, looks great! thanks for catching the case bug for nginx, just a couple of questions for qa.

1. ingress_controller_kind - this is used by nginx and contour, and now traefik. Does the change work with contour, or do we need to have a special logic for contour? (I think I did most of my testing originally with contour & so bit worried it will break)
2. When adding a ingress controller, I like to test with the most complex options with certman / external-dns and grafana, to see if you get a ssl fqdn for grafana. If that all works, then we are in good shape

[Gordonby]

@MattLeach25 I can walk you through these advanced testing scenarios on Monday. Stick some time in.

[MattLeach25]

@MattLeach25 I can walk you through these advanced testing scenarios on Monday. Stick some time in.

Keith has already talked me through the changes so I can get going. If I get stuck I’ll pop up next week :)

thanks both.

[Gordonby]

LGTM