Can't set HTTP headers as arg to s3.put to ensure correct Content-Type is set

[colin-stubbs]

Description of Issue/Question

Setup

Using module.run s3.put to place HTML files in an S3 bucket.

Steps to Reproduce Issue

Try using s3.put to place an object into an S3 bucket.
As s3.put has no header argument available the correct Content-Type will not be set, e.g. text/html
The default is binary/octet-stream and this is what is currently set for any objects created using s3.put

Refer to: https://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectPUT.html

Versions Report

n/a - see pull request diff

[garethgreenaway]

@colin-stubbs Thanks for the report and the PR!