Span name updated to follow semantic conventions to reduce cardinality

[codeboten]

Description

Using the path for span names in the requests instrumentation led to high cardinality in the reported data. This changes updates the name to use the method instead as defined in the semantic conventions

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• Tested locally
• Ran unit tests

Checklist:

• Followed the style guidelines of this project
• Changelogs have been updated
• Unit tests have been updated

[aabmass]

Nice

[lzchen]

Should we change this for other http client libraries too?

[codeboten]

It looks like aiohttp-client already does the right thing unless the configuration overrides the span_name method, did I miss any other http client libraries @lzchen?

[lzchen]

It looks like aiohttp-client already does the right thing unless the configuration overrides the span_name method, did I miss any other http client libraries @lzchen?

I think it'd be good to add the "HTTP" part in front of it for the default.

[codeboten]

@lzchen updated span name for aiohttp-client as well