fix: urlParser will incorrect parsing url like http://abc.com/xxx@xxx/a/b

[wangzhen2271]

Fixes issue #1509

Changes

urlParser incorrect url which "@" not in first segment, like "http://abc.com/xxx@xxx".
So I modified that it will judge if "@" is in first segment, that means before the first "/", otherwise ignore handle it.

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

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: wangzhen2271 (988c5dd)

[codecov]

Codecov Report

Merging #1511 (819b285) into main (0948054) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #1511      +/-   ##
==========================================
+ Coverage   84.71%   84.72%   +0.01%     
==========================================
  Files         155      155              
  Lines        4778     4781       +3     
==========================================
+ Hits         4047     4050       +3     
  Misses        731      731              

Impacted Files	Coverage Δ
...include/opentelemetry/ext/http/common/url_parser.h	92.00% <100.00%> (+0.52%)	⬆️

[lalitb]

Thanks for fix. You need to fix the code format (for CI test to pass) as described here - https://github.com/open-telemetry/opentelemetry-cpp/blob/main/CONTRIBUTING.md#how-to-send-pull-requests

[owent]

LGTM