[confgenerator] Fix Windows Event Log V2 and Raw receivers in Otel Logging.

[franciscovalentecastro]

Description

This PR fixes the following fields in the windows_event_log_v2 and windows_event_log_raw_xml receivers to match it's fluent-bit counterpart. Improved the transformation test cases. This is a followup to #2198.

Some details :

V2 :

• Level, Opcode, Tasks and Keywords now uses parsed_xml.Event.System.* fields to show non-rendered versions of this fields.
• Message now uses parsed_xml.Event.RenderingInfo.Message to show non-parsed security messages.
• ActivityID, RelatedActivityID and Version are now exposed by the OTel windowseventlogreceiver.

Raw :

• Message now uses parsed_xml.Event.RenderingInfo.Message to show non-parsed security messages.

Related issue

b/413406335

How has this been tested?

Checklist:

• Unit tests
  • Unit tests do not apply.
  • Unit tests have been added/modified and passed for this PR.
• Integration tests
  • Integration tests do not apply.
  • Integration tests have been added/modified and passed for this PR.
• Documentation
  • This PR introduces no user visible changes.
  • This PR introduces user visible changes and the corresponding documentation change has been made.
• Minor version bump
  • This PR introduces no new features.
  • This PR introduces new features, and there is a separate PR to bump the minor version since the last release already.
  • This PR bumps the version.

[avilevy18]

is MapValues and MapValuesExclusive not needed anymore?

[franciscovalentecastro]

MapValues or MapValuesExclusive are not required anymore to "correctly" generate the jsonPayload.Level field on "integer format" (which fluent-bit does by default, which we are replicating here).

jsonPayload.parsed_xml.Event.System.Level is already the original integer field (non-rendered, non-human readable format) so there is no mapping needed.

[Explanation]
There are two versions of Level generated in a "Raw XML" windows even log (see tests for examples), one is Event.System.Level (which is an integer from 1 to 4) and Event.RenderedInfo.Level (which is a "human readable" string like "Info"). We used to do this mapping manually, because the OTel windowseventlog receiver exposes only the "human readable" version by default.

There are ways to expose the non-rendered fields (see #2198) in the receiver, but we chose currently to use the original XML to obtain the "non-rendered" fields.

[avilevy18]

LGTM