Comment out runAsUser and runAsGroup in values.yaml

[peterguy]

Since PR 2456 in the Sourcegraph repo, support for the default value of -1 for the KUBERNETES_RUN_AS_USER and KUBERNETES_RUN_AS_GROUP Executor environment variables has been removed - those environment variables now require either blank values or non-negative integers in the range [0, 2147483647], to match the range for Unix UIDs and GIDs.

This PR updates charts/sourcegraph-executor/k8s/values.yaml so that runAsUser and runAsGroup are commented out, with comments to explain that the user can uncomment them to use them. Having those settings commented out causes KUBERNETES_RUN_AS_USER and KUBERNETES_RUN_AS_GROUP in charts/sourcegraph-executor/k8s/templates/executor.ConfigMap.yaml to be blank, which is the new default value.

Checklist

• Follow the manual testing process
• Update changelog
• Update Kubernetes update doc

Test plan

A Helm deployment is successful and does not fail with errors like KUBERNETES_RUN_AS_USER must be a UID in the range 0 to 2,147,483,647, but got "-1".

[sourcegraph-release-bot]

The backport to 6.0.x failed at https://github.com/sourcegraph/deploy-sourcegraph-helm/actions/runs/12940695653:

The process '/usr/bin/git' failed with exit code 1

To backport this PR manually, you can either:

Via the sg tool

Use the sg backport command to backport your commit to the release branch.

sg backport -r 6.0.x -p 618

Via your terminal

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-6.0.x 6.0.x
# Navigate to the new working tree
cd .worktrees/backport-6.0.x
# Create a new branch
git switch --create backport-618-to-6.0.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 e215bdeb2edbf2518be8aa79acdbe677aafc3b57
# Push it to GitHub
git push --set-upstream origin backport-618-to-6.0.x
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-6.0.x

If you encouter conflict, first resolve the conflict and stage all files, then run the commands below:

git cherry-pick --continue
# Push it to GitHub
git push --set-upstream origin backport-618-to-6.0.x
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-6.0.x

• Follow above instructions to backport the commit.
• Create a pull request where the base branch is 6.0.x and the compare/head branch is backport-618-to-6.0.x., click here to create the pull request.

Once the pull request has been created, please ensure the following:

• Make sure to tag @sourcegraph/release in the pull request description.

• kindly remove the release-blocker from this pull request.