Add error log when getting a http error code

[owent]

Signed-off-by: owent admin@owent.net

Fixes #1578

Changes

• Add error log when OTLP HTTP exportor and ES exportor get a http error code

For significant contributions please make sure you have completed the following items:

• CHANGELOG.md updated for non-trivial changes
• Unit tests have been added
• Changes in public API reviewed

[codecov]

Codecov Report

Merging #1581 (041bdfe) into main (4535347) will decrease coverage by 0.07%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1581      +/-   ##
==========================================
- Coverage   85.02%   84.96%   -0.06%     
==========================================
  Files         156      156              
  Lines        4977     4977              
==========================================
- Hits         4231     4228       -3     
- Misses        746      749       +3     

Impacted Files	Coverage Δ
ext/src/http/client/curl/http_client_curl.cc	80.31% <0.00%> (-1.13%)	⬇️

[lalitb]

LGTM. Thanks for the fix.