Remove disable/enable from components

[bogdandrutu]

Currently we do have two ways to control if a component is disabled/enabled:

1. Via the disabled property
2. If the component is present in a pipeline/extension list.

I would suggest that we keep only the second option to control if the component is enabled/disabled.

[tigrannajaryan]

@pjanotti please comment. We need to settle this before Beta release.

[pjanotti]

SGTM. The only possible use for disabled is to keep configuration and quickly disable something but with VCS and a good text editor it is trivial to workaround that.

[ringerc]

@pjanotti

SGTM. The only possible use for disabled is to keep configuration and quickly disable something but with VCS and a good text editor it is trivial to workaround that.

It was possible to enable/disable using env-var substitution using this property, but isn't very practical to do so with e.g. the otel operator by adding/removing from the pipelines component list.