Respect `SERVER_REGION` in more targets and fix various bugs

[derpsteb]

Hey everyone, I tried using the tool based on main but encountered various errors. I went through them and tried to fix the ones that are relevant to us.

Tbh, I am a bit confused by these errors as they are very surface level. Is the tool actively used inside the minio org?

Please also see the commit bodies as I included some info there.

Proposed changes:

• Respect SERVER_REGION env variable in aws-sdk-go, aws-sdk-java and versioning target
• Add locationconstraint flag that is necessary when using the AWS CLI
• Remove a header that caused API errors in aws-sdk-ruby. Please note that I have no idea what this header might be used for. Removing it might silently break some expectations. However, in it's current form I don't think the request ever succeeded.
• Fix bugs inside versioning target that caused API errors
• The code removed here didn't make sense to me. Again, I am uncertain what this might be currently used for. Especially after setting a correct value for ObjectLockLegalHoldStatus in line 263

Please ping me if I should give more context to the changes.