AWS lambda function API key verification stabilization

[kenchan0130]

What does this PR do?

Support retry requesting API key verification

Motivation

In a lambda function, API requests for API Key validation sometimes fail.
API call failure is an expected event.
Therefore, I tried to stabilize the function by retrying.

CloudWatch Logs

@timestamp	@message
2022-07-20 19:24:41.722	END RequestId: bd4a1909-4454-4b60-8612-bfb75a9bc758
2022-07-20 19:24:41.722	REPORT RequestId: bd4a1909-4454-4b60-8612-bfb75a9bc758 Duration: 1347.70 ms Billed Duration: 1348 ms Memory Size: 1024 MB Max Memory Used: 123 MB Init Duration: 2047.79 ms
2022-07-20 19:24:41.720	[INFO] 2022-07-20T19:24:41.720Z bd4a1909-4454-4b60-8612-bfb75a9bc758 [dd.trace_id=2154822661225323426 dd.span_id=1818091998981912450] 202 POST https://api.datadoghq.com/api/v1/distribution_points (585.6555ms)
2022-07-20 19:24:40.373	START RequestId: bd4a1909-4454-4b60-8612-bfb75a9bc758 Version: $LATEST
2022-07-20 19:24:40.373	[INFO] 2022-07-20T19:24:38.843Z Found credentials in environment variables.
2022-07-20 19:24:40.373	[INFO] 2022-07-20T19:24:40.372Z [dd.trace_id=0 dd.span_id=0] patched 1/1 modules (logging)
2022-07-20 19:15:49.128	END RequestId: b71f6377-f7e2-493f-afbe-e6afc4b3a7d6
2022-07-20 19:15:49.128	REPORT RequestId: b71f6377-f7e2-493f-afbe-e6afc4b3a7d6 Duration: 1314.66 ms Billed Duration: 1315 ms Memory Size: 1024 MB Max Memory Used: 123 MB Init Duration: 2168.51 ms
2022-07-20 19:15:49.127	[INFO] 2022-07-20T19:15:49.126Z b71f6377-f7e2-493f-afbe-e6afc4b3a7d6 [dd.trace_id=3212527782324643694 dd.span_id=6417391527933788086] 202 POST https://api.datadoghq.com/api/v1/distribution_points (586.3867ms)
2022-07-20 19:15:47.812	START RequestId: b71f6377-f7e2-493f-afbe-e6afc4b3a7d6 Version: $LATEST
2022-07-20 19:15:47.812	[INFO] 2022-07-20T19:15:46.190Z Found credentials in environment variables.
2022-07-20 19:15:47.812	[INFO] 2022-07-20T19:15:47.811Z [dd.trace_id=0 dd.span_id=0] patched 1/1 modules (logging)
2022-07-20 19:14:44.500	[ERROR] Exception: The API key is not valid. Traceback (most recent call last):   File "/var/lang/lib/python3.7/imp.py", line 234, in load_module     return load_source(name, filename, file)   File "/var/lang/lib/python3.7/imp.py", line 171, in load_source     module = _load(spec)   File "", line 696, in _load   File "", line 677, in _load_unlocked   File "", line 728, in exec_module   File "", line 219, in _call_with_frames_removed   File "/opt/python/lambda_function.py", line 67, in     raise Exception("The API key is not valid.")
2022-07-20 19:14:43.154	[INFO] 2022-07-20T19:14:43.153Z Found credentials in environment variables.
2022-07-20 19:14:42.578	END RequestId: b71f6377-f7e2-493f-afbe-e6afc4b3a7d6
2022-07-20 19:14:42.578	REPORT RequestId: b71f6377-f7e2-493f-afbe-e6afc4b3a7d6 Duration: 2602.91 ms Billed Duration: 2603 ms Memory Size: 1024 MB Max Memory Used: 47 MB

Types of changes

• Bug fix
• New feature
• Breaking change
• Misc (docs, refactoring, dependency upgrade, etc.)

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