Adding support for FIFO Queues

[hobsons-feliperoque]

This plugin as it currently stands does not support FIFO Queues. It is missing the following required fields:

• Message Group Id
• Message Deduplication Id

This PR aims to make it compatible, by adding those two fields to the send-message requests whenever the Queue name contains .fifo, which is the required suffix for FIFO Queues.

The Group Id is what ensures the FIFO behaviour of the Queue, but only if it's the same for every message, it's setting a default value for it, which will ensure the FIFO behaviour, but it can be overwritten if needed.

The Deduplication Id must be unique to every message if you want it to be sent, so unless otherwise specified, it's generating a uuid for it for every send request.

[elasticcla]

Hi @hobsons-feliperoque, we have found your signature in our records, but it seems like you have signed with a different e-mail than the one used in your Git commit. Can you please add both of these e-mails into your Github profile (they can be hidden), so we can match your e-mails to your Github profile?

[crael]

Is this PR dead if @hobsons-feliperoque doesn't update his profile? The changes look like a nice addition to the official plugin.

[mahadevans87]

Any update on this. This feature is a nice to have!