feat(helm): add option to disable rbac creation

[gbloquel]

AIM

Enable or disable ClusterRole and RoleBinding creation. The use case is to allow users to use this chart in clusters where creating such objetcs is not allowed by helm deployment. Also, it's adding the ability to customize the rules, as not all of them are required for the operator to work.

How to use

To use this feature, simply update a propertie in the values.

...
operator:
  rbac:
    create: true
...

• set true for enable but it's default value.
• set false for disable.

[wenchajun]

please update here first https://github.com/fluent/fluent-operator/blob/master/charts/fluent-operator/templates/fluent-operator-clusterRole.yaml When the version is released we will merge it here

[gbloquel]

Thanks for your help. I have done a new PR here https://github.com/fluent/fluent-operator/pull/1556