Elastic Search exporter follow ECS guidelines

[ShadowMaxLeb]

Fixes #3091

Changes

Try to follow as much as possible the ECS guidelines and the ECS Logs reference

This impacts fields:

• timestamp: now set to @timestamp with a Date string
• body: now set to message
• name: now set to log.logger
• severity: now set to log.level
• attributes: not under the attributes key anymore

[netlify[bot]]

✅ Deploy Preview for opentelemetry-cpp-api-docs canceled.

Name	Link
🔨 Latest commit	fa03dc36dc6de93945f0e2098f0099881f7e3b8a
🔍 Latest deploy log	https://app.netlify.com/sites/opentelemetry-cpp-api-docs/deploys/671c741ddfaa200008cfc0c4

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 87.91%. Comparing base (497eaf4) to head (fa03dc3). Report is 149 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3107      +/-   ##
==========================================
+ Coverage   87.12%   87.91%   +0.79%     
==========================================
  Files         200      195       -5     
  Lines        6109     6133      +24     
==========================================
+ Hits         5322     5391      +69     
+ Misses        787      742      -45     

see 98 files with indirect coverage changes

[marcalff]

Thanks for the fix.

@ShadowMaxLeb Please merge main into this PR, to resolve "This branch is out-of-date with the base branch".

[MaxLeb]

Thanks for the fix.

@ShadowMaxLeb Please merge main into this PR, to resolve "This branch is out-of-date with the base branch".

I will try to update it next week as I cannot do it right now.

[ShadowMaxLeb]

@marcalff , How can I retry the failed job as it failed because it was lacking a runner ?