ansible/helm: Rename max-workers to max-concurrent-reconciles

[varshaprasad96]

Description of the change:
This commit:

• Adds --max-concurrent-reconciles flag to helm binary
• Rename MaxWorkers to MaxConcurrentReconciles in ansible/helm
  implementations.

Fixes: #3360

Motivation for the change:
Modify operator flags in ansible/helm operators to match controller-runtime constructs.

Checklist

If the pull request includes user-facing changes, extra documentation is required:

• Add a new changelog fragment in changelog/fragments (see changelog/fragments/00-template.yaml)
• Add or update relevant sections of the docs website in website/content/en/docs

[hasbro17]

Rename "max-workers" to "max-concurrent-reconciles" in ansible/helm implementations.

Is this referring to renaming/replacing the flag? In which case this is not an addition.
The verb "Rename" would be better suited to the Changed section.

Or is this referring to renaming the ansible controller Options field from MaxWorkers to MaxConcurrentReconcilers? I don't think that's a user facing change, and so we don't need to mention that in the CHANGELOG.

Also can you add a one line explanation for what --max-concurrent-reconciles does, or link to existing docs if we have those.

[varshaprasad96]

Add "--max-concurrent-reconciles" flag to helm binary - meant the adding of a new flag, so that later we could deprecate --max-workers.
For Rename "max-workers" to "max-concurrent-reconciles" in ansible/helm implementations., I meant renaming the ansible controller Options field from MaxWorkers to MaxConcurrentReconcilers. Ill remove the second part from changelog.

[camilamacedo86]

Missing update the helm doc: https://github.com/operator-framework/operator-sdk/blob/master/website/content/en/docs/building-operators/helm/reference/advanced_features.md#changing-the-concurrent-worker-count

Also, could you please replace its example for to use the new layout? We have no longer the exec-entrypoint.

to use it we need to update the config/manager/manager.yaml with or run $ helm-operator --max-concurrent-reconciles=3

 spec:
      containers:
      - image: {{ .Image }}
        args:
        - "--enable-leader-election"
        - "--max-concurrent-reconciles=3"
        name: manager

[joelanford]

@varshaprasad96 @camilamacedo86

This section was pre-emptively updated and wordsmith-ed here:

https://github.com/operator-framework/operator-sdk/pull/3326/files#diff-47162e7ecac88f3c6f2c91e49dcd7757R91-R105

It would be better to make that update in this PR, so feel free to steal that section.

[camilamacedo86]

merged the helm doc to help its updated.
PS.: I update the doc and forgot :-) tks

[varshaprasad96]

Made a small addition to the existing doc.

[camilamacedo86]

just a few nits;

• rebase with the master (get docs)
• update the helm doc with the change
• update the fragment

Otherwise, it shows great 👍

[joelanford]

/lgtm