Description of problem:
When retrieving an application's descriptor, the YAML data contains BSON::OrderedHash objects


Version-Release number of selected component (if applicable):


How reproducible:
Always


Steps to Reproduce:
1. Create application
2. Retrieve descriptor via REST API:
     http://$broker/broker/rest/domains/$domain/applications/$app/descriptor
3.
  
Actual results:
<?xml version="1.0" encoding="UTF-8"?>
<response>
<data>--- 
Scaling: 
  Max: -1
  Min: 1
Vendor: unknown
Description: &quot;&quot;
Cart-Data: !map:BSON::OrderedHash {}

Architecture: noarch
Requires: 
- ruby-1.9
License: unknown
Categories: 
- cartridge
Version: &quot;0.0&quot;
Display-Name: railsapp-0.0-noarch
Name: railsapp
Help-Topics: !map:BSON::OrderedHash {}

Website: &quot;&quot;
License-Url: &quot;&quot;</data>
<type>descriptor</type>
<supported-api-versions>
<supported-api-version>1.0</supported-api-version>
</supported-api-versions>
<status>ok</status>
<messages/>
<version>1.0</version>
</response>


Expected results:
Data should look like:
--- 
Name: railsapp
Description: ""
Cart-Data: {}

Display-Name: railsapp-0.0-noarch
Help-Topics: {}

...


Additional info:
This doesn't break any current features, but will definitely be an issue. We are currently working around it in the template creation scripts.