[Instrumentation.AWSLambda] Updated AWSLambda ActivitySource Name

[samimusallam]

Fixes #484

Changes

Use the assembly name as the ActivitySource name

Please provide a brief description of the changes here.

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

• Appropriate CHANGELOG.md updated for non-trivial changes
• Design discussion issue #

[codecov]

Codecov Report

Merging #534 (2c4bf02) into main (a7ac682) will not change coverage.
The diff coverage is 0.00%.

@@          Coverage Diff          @@
##            main    #534   +/-   ##
=====================================
  Coverage   0.00%   0.00%           
=====================================
  Files        168     168           
  Lines       5128    5130    +2     
=====================================
- Misses      5128    5130    +2     

Impacted Files	Coverage Δ
...ntation.AWSLambda/Implementation/AWSLambdaUtils.cs	0.00% <0.00%> (ø)

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 7 days.

[Oberon00]

@open-telemetry/dotnet-contrib-maintainers I'm an "owner" of the component changed here, but not an approver on the repository. What can I do to get this PR merged? I would like to have this merged before requesting an release.

[reyang]

@open-telemetry/dotnet-contrib-maintainers I'm an "owner" of the component changed here, but not an approver on the repository. What can I do to get this PR merged? I would like to have this merged before requesting an release.

The current process requires approval from maintainer/approver. I guess we want it to be changed to "the PR has to receive approval from either the project maintainer/approver, OR the owner of the component (as indicated by the component_owners.yml file).

[utpilla]

This is not the assembly name.

[Oberon00]

Right, this should be corrected. But I hope it is consistent with the current guidelines? At least that was the assumption under which I approved it.