Remove haproxy

General MR

Summary

Remove haproxy from the big bang umbrella product releases to align with a broader strategy of slimming down the core product.

Relevant logs/screenshots

TBD

Linked Issue

Closes #2948

Upgrade Notices

HAProxy is removed from the Big Bang product release in this release 3.13. The chart will move to maintained. Please create an issue in our backlog if you are with a government program that requires updates to this chart. The HAProxy chart can still be deployed using the Big Bang packages section as follows:

packages:
  haproxy:
    enabled: true
    git:
      # -- Git repo URL holding the helm chart for this package, required if using git
      repo: https://repo1.dso.mil/big-bang/product/packages/haproxy.git
      path: "./chart"
      tag: "1.19.3-bb.10"