Update message_broker_producer module

Fixes #3239
Fixes #2051

The `message_broker_producer.module () has been updated to v0.2.0. `dosomething_mbp,module` needs to updated to integrate the new functionality.

- [x] "Unpin" release version in `drupal-org.make` by removing:
```
; Pin to 0.1.21+aug25 pending 0.2.x development
projects[message_broker_producer][download][revision] = "40e8d9892e378846adf5cb9b295f53c8a533f123"
```
- [x] Add `hook_update` function to `dosomething_mbp` to create `message_broker_producer` production entries. The "production" entries will define exchange, queues and routing_keys values for each production specific to the $origin value defined in the `dosomething_mbp_request()`.
- [x] Update `dosomething_mbp.module` to call `message_broker_producer_request(<production>, <payload>)` where <production> referers to the values defined in the `dosomething_mbp.module - `hook_update()` function.
  - [x] Update `dosomething_mbp_request()` to define the `$production` value based on the values defined in the `dosomething_mbp.module - `hook_update()` function.
  - [x] Update `dosomething_mbp_get_transactional_payload()` to define Mandrill templates in payload based on $origin.
  - [x] Update `dosomething_mbp_get_transactional_payload()` to define Mandrill tags in payload based on $origin.

Related:
https://github.com/DoSomething/message_broker_producer/pull/81