use internal traefik fork

[jr0d]

• forked image contains a patch which has not yet been merged upstream

What type of PR is this?

Bug

What this PR does/ why we need it:

Uses the d2iq fork of traefik which contains a fix for a blocker issue which has not yet been merged upstream
Which issue(s) this PR fixes:

https://jira.d2iq.com/browse/D2IQ-75534

Special notes for your reviewer:
Upstream issue/PR: traefik/traefik#8143
Does this PR introduce a user-facing change?:

[traefik] A bug causing configuration updates to fail when a user adds an invalid tls secret has been fixed

Checklist

• The commit message explains the changes and why are needed.
• The code builds and passes lint/style checks locally.
• The relevant subset of integration tests pass locally.
• The core changes are covered by tests.
• The documentation is updated where needed.

[d2iq-mergebot]

This repo has @mesosphere-mergebot integration. You can perform the following commands by submitting a comment. Submit a comment with content "@mesosphere-mergebot help" to view more detailed help text and examples. Be sure the have a look at the mergebot documentation, too.

@mesosphere-mergebot backport  

[branden]

@mesosphere-mergebot backport release/3 release/4

[d2iq-mergebot]

Backport PR for release/3: #1163
Conflicts present in files:

addons/traefik/traefik.yaml

Backport PR for release/4: #1164
Conflicts present in files:

addons/traefik/traefik.yaml