[bitnami/seaweedfs]: add pod for weed iam

[tcrasset]

Description of the change

This adds a pod starting the IAM API from weed.

Benefits

This will allow adding per-user access control on different parts of the file tree.

Possible drawbacks

There is no TLS communication to iam, nor is there any grpc.

Applicable issues

• fixes [bitnami/seaweedfs] Add weed iam container #31331

Additional information

I copy pasted the values and files from bitnami/seaweedfs/templates/wedadv/ (yes there is a typo for webdav in the path) and modified them accordingly. I deleted a few files that I thought were not useful for a first implementation, namely:

• networkpolicy.yaml
• cert.yaml
• hpa.yaml
• ingress.yaml and ingress-tls-secret.yaml
• tls-secret.yaml

The respective fields in values.yaml were deleted too.

Note that I did this without the use of GIT_ROOT/template/CHART_NAME. Please tell me if I should have.

Checklist

• Chart version bumped in Chart.yaml according to semver. This is not necessary when the changes only affect README.md files.
• Variables are documented in the values.yaml and added to the README.md using readme-generator-for-helm
• Title of the pull request follows this pattern [bitnami/<name_of_the_chart>] Descriptive title
• All commits signed off and in agreement of Developer Certificate of Origin (DCO)