require repo for stable charts

[joejulian]

What type of PR is this?

chore

What this PR does/ why we need it:

The helm stable chart repo is being retired. We have forked these charts and will now need to reference them in the repo field.

Which issue(s) this PR fixes:

https://jira.d2iq.com/browse/D2IQ-72545

Special notes for your reviewer:
This depends on mesosphere/charts#852

Does this PR introduce a user-facing change?:

none

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.

[armandgrillet]

LGTM, the Dispatch CI issue doesn't seem to be related:

STAGE [Deploying Enabled Addons]
dashboard                                                              [OK]
konvoyconfig                                                           [OK]
reloader                                                               [OK]
external-dns                                                           [OK]
opsportal                                                              [OK]
cert-manager                                                           [OK]
defaultstorageclass-protection                                         [OK]
gatekeeper                                                             [OK]
traefik                                                                [OK]
dex                                                                    [OK]
awsebscsiprovisioner                                                   [OK]
traefik-forward-auth                                                   [OK]
kube-oidc-proxy                                                        [OK]
dex-k8s-authenticator                                                  [OK]
prometheus                                                             [OK]
velero                                                                 [OK]
prometheusadapter                                                      [OK]
elasticsearch                                                          [OK]
elasticsearch-curator                                                  [OK]
elasticsearchexporter                                                  [OK]
fluentbit                                                              [OK]
kibana                                                                 [OK]

Error: failed to deploy the cluster: the following 1 addons failed to deploy: [ kommander ]

[shaneutt]

There is no need to fork or bump metallb in particular, please hold on that one 🥺

[joejulian]

This has to happen regardless of the future of metallb. We should merge this and the metallb changes should be rebased on it.