Fixing bug - to take region from input while making AWS connection

[ArvinthC3000]

🔩 Description: What code changed, and why?

When the user is configuring S3 as a backup in AWS, the verify command fails for S3-backup-check in the pre-deployment flow with the following error in the screenshot.

Reason:
While creating a new session in AWS the region is not taken. So the session created is not proper and unable to connect to the bucket, as it takes us-east-1 as the default region and the user bucket is in the ap-south-1 region.

Other issue:

• AWS-SDK expects the endpoint URL to be in the following pattern https://s3.REGION.amazonaws.com. For https://s3.amazonaws.com , it consider it as the bucket is in us-east-1 (default region)

To fix this, the endpoint URL is programmatically changed to the https://s3.REGION.amazonaws.com pattern which is only applicable to the AWS S3 bucket endpoint URL.

⛓️ Related Resources

Jira ticket: https://chefio.atlassian.net/browse/CHEF-5820

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