add support for versioning on S3

[techtribe]

enabled support for unrequired resource-variables like versioning (on
S3).

[techtribe]

While I couldn't find any examples for s3.PutBucketAcl & s3.PutBucketCors (which are the only ones that use "resource" as non-required parameter) that it would be a best practice to use the following structure if you want to add the "resource"-parameter to your request:

s3.ListObjects :

Versions:true = works
Versions:"true" = works
Versions:"false" = does not work
Versions:false = does not work
Versions:undefined = does not work

which will imply that examples for s3.PutBucketAcl & s3.PutBucketCors will need to have the above examples (how to enable an s3-put-bucket-example) to make it work.

@chilts are you okay with this approach, or do you have another solution? In the old/previous setup "required"-parameter was ignored (at awssum.js at line 501), so it was always sent even if you didn't put in the params-object in your request/call.

[kriangkraikaewbappha]

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