Add region attribute to s3_file provider

[zl4bv]

This is basically PR #149 with the merge conflict fixed.

Pinging @TaopaiC @ubiquitousthey @miketheman

[zl4bv]

RuntimeError
------------
Property content of file[/etc/chef/ohai/hints/ec2.json] cannot be passed a block! If you meant to create a resource named content instead, you'll need to first rename the property.

Could I get some help resolving this error please? Not sure why it thinks it is being passed a block or why the error occurs given that file was not changed in this PR.

[tas50]

The error was introduced in a nightly build of ChefDK which is used in Travis. I fixed it up on master.

[zl4bv]

Ah thanks @tas50 - that would explain it! Have resolved the merge conflicts and the build is now passing.

[tas50]

@zl4bv Can you rebase this against master and document it in the readme so others can use it? Thanks

[zl4bv]

@tas50 Rebased and documentation added.

Minimally tested with kitchen-docker against the existing test cookbook in the repo:

       Starting Chef Client, version 12.6.0
       Creating a new client identity for s3-file-ubuntu-1404 using the validator key.
       resolving cookbooks for run list: ["aws_test::s3_file"]
       Synchronizing Cookbooks:
         - ohai (2.0.4)
         - aws (2.8.0)
         - aws_test (0.0.1)
       Compiling Cookbooks...
       Recipe: aws::default
         * chef_gem[aws-sdk] action install
           - install version ~> 2.2 of package aws-sdk
         Converging 2 resources
         * chef_gem[aws-sdk] action install (up to date)
       Recipe: aws_test::s3_file
         * aws_s3_file[/tmp/an_file] action create[2016-01-26T07:51:17+00:00] WARN: /tmp/kitchen/cache/cookbooks/aws/providers/s3_file.rb:41:in `block in do_s3_file': property group is declared in both remote_file[/tmp/an_file] and #<#<Class:0x00000001ceb188>:0x0000000c6e12c8>. Use new_resource.group instead. At /tmp/kitchen/cache/cookbooks/aws/providers/s3_file.rb:41:in `block in do_s3_file'

           * remote_file[/tmp/an_file] action create
             - create new file /tmp/an_file


       Running handlers:
       Running handlers complete
       Chef Client finished, 3/4 resources updated in 15 seconds
       Finished converging <s3-file-ubuntu-1404> (0m38.87s).
-----> Setting up <s3-file-ubuntu-1404>...
$$$$$$ Running legacy setup for 'Docker' Driver
       Finished setting up <s3-file-ubuntu-1404> (0m0.00s).
-----> Verifying <s3-file-ubuntu-1404>...
$$$$$$ Running legacy verify for 'Docker' Driver
       Preparing files for transfer
       Transferring files to <s3-file-ubuntu-1404>
       Finished verifying <s3-file-ubuntu-1404> (0m0.00s).
       Finished testing <s3-file-ubuntu-1404> (0m39.37s).