add: script to quickly fetch and compare layers in diffrent regions

[alexgallotta]

example of the diff

--- all_layers_af-south-1.log	2023-09-08 11:53:10.813636954 -0400
+++ all_layers_us-east-1.log	2023-09-08 11:53:37.657767416 -0400
--- all_layers_ap-east-1.log	2023-09-08 11:53:28.145722728 -0400
+++ all_layers_us-east-1.log	2023-09-08 11:53:37.657767416 -0400
--- all_layers_ap-northeast-3.log	2023-09-08 11:53:18.501675700 -0400
+++ all_layers_us-east-1.log	2023-09-08 11:53:37.657767416 -0400
--- all_layers_ap-south-2.log	2023-09-08 11:52:55.693557416 -0400
+++ all_layers_us-east-1.log	2023-09-08 11:53:37.657767416 -0400
+464622532012:layer:Datadog-Extension-ARM-OTEL:3",
+464622532012:layer:Datadog-Extension-OTEL:3",
-464622532012:layer:dd-trace-java:9",
+464622532012:layer:dd-trace-java:11",
--- all_layers_ap-southeast-3.log	2023-09-08 11:53:34.825754285 -0400
+++ all_layers_us-east-1.log	2023-09-08 11:53:37.657767416 -0400
--- all_layers_ap-southeast-4.log	2023-09-08 11:53:36.605762554 -0400
+++ all_layers_us-east-1.log	2023-09-08 11:53:37.657767416 -0400
+464622532012:layer:Datadog-Extension-ARM-OTEL:3",
+464622532012:layer:Datadog-Extension-OTEL:3",
-464622532012:layer:dd-trace-java:5",
+464622532012:layer:dd-trace-java:11",
--- all_layers_eu-central-1.log	2023-09-08 11:53:05.069607263 -0400
+++ all_layers_us-east-1.log	2023-09-08 11:53:37.657767416 -0400
--- all_layers_eu-central-2.log	2023-09-08 11:53:06.257613456 -0400
+++ all_layers_us-east-1.log	2023-09-08 11:53:37.657767416 -0400
+464622532012:layer:Datadog-Extension-ARM-OTEL:3",
+464622532012:layer:Datadog-Extension-OTEL:3",
--- all_layers_eu-north-1.log	2023-09-08 11:53:12.445645273 -0400
+++ all_layers_us-east-1.log	2023-09-08 11:53:37.657767416 -0400
--- all_layers_eu-south-1.log	2023-09-08 11:52:59.245576502 -0400
+++ all_layers_us-east-1.log	2023-09-08 11:53:37.657767416 -0400
--- all_layers_eu-south-2.log	2023-09-08 11:53:00.593583680 -0400
+++ all_layers_us-east-1.log	2023-09-08 11:53:37.657767416 -0400
+464622532012:layer:Datadog-Extension-ARM-OTEL:3",
+464622532012:layer:Datadog-Extension-OTEL:3",
--- all_layers_me-central-1.log	2023-09-08 11:53:02.453593526 -0400
+++ all_layers_us-east-1.log	2023-09-08 11:53:37.657767416 -0400
--- all_layers_me-south-1.log	2023-09-08 11:53:22.353694693 -0400
+++ all_layers_us-east-1.log	2023-09-08 11:53:37.657767416 -0400
--- all_layers_us-east-2.log	2023-09-08 11:53:38.733772367 -0400
+++ all_layers_us-east-1.log	2023-09-08 11:53:37.657767416 -0400

Planning to add hash checksum verification, since version number is not reliable

[purple4reina]

It would be nice to have an automated way to generate this, since we will be adding more in the future. It would be a pain to have to update this one file every time we add a new region.

[alexgallotta]

Yep this is done already in this function
https://github.com/DataDog/datadog-lambda-extension/pull/166/files#diff-260f0a0f31567ce6be2509b618b7298adfdb12ae2a72191a93f6b17d4cfb7827R1

I saved the file here since it doesn't happen very often