Add attrs for aws lambda entity

[hmstepanek]

Overview

Add attrs for aws lambda entity linking.

When an application invokes a Lambda, linking between the application and AWS Lambdas is done using the following span attributes:

cloud.platform: the string aws_lambda
cloud.resource_id: the ARN for the Lambda, or an alias or version, if it can be determined.
Lambda ARNs follow the format:

arn:${Partition}:lambda:${Region}:${Account}:function:${FunctionName}
arn:${Partition}:lambda:${Region}:${Account}:function:${FunctionName}:${Alias}
arn:${Partition}:lambda:${Region}:${Account}:function:${FunctionName}:${Version}

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ PYTHON	bandit	2		0	4.93s
✅ PYTHON	black	3	0	0	1.19s
✅ PYTHON	flake8	3		0	0.61s
✅ PYTHON	isort	3	0	0	0.32s
✅ PYTHON	pylint	3		0	5.91s

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 82.35294% with 3 lines in your changes missing coverage. Please review.

Project coverage is 81.34%. Comparing base (dacf155) to head (a855845).

Files with missing lines	Patch %	Lines
newrelic/hooks/external_botocore.py	82.35%	1 Missing and 2 partials ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1227   +/-   ##
=======================================
  Coverage   81.33%   81.34%           
=======================================
  Files         200      200           
  Lines       21891    21908   +17     
  Branches     3469     3472    +3     
=======================================
+ Hits        17805    17821   +16     
  Misses       2942     2942           
- Partials     1144     1145    +1     

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