Add validation during new project creation (1) (Add REST endpoint to query cloud service providers)

@yas, please review this patch. It does the following

- Added API endpoint for querying a Cloud Service Provider by name. This will be needed to check if a cloud service provider already exists.
- Corrected `dependency` declaration in configuration files. The adjustment will let Drupal properly clean up the configurations if `facade_remote_worker` is uninstalled.
- Slightly tweaked CFn template to launch 6.x version of Cloud Orchestrator properly. Make a couple of tweaks so that the 6.x version of Cloud Orchestrator can be deployed using Facade.

@baldwinlouie

Thank you for the patch. I'll merge the patch to 1.0.x, and close this issue as Fixed.

Automatically closed - issue fixed for 2 weeks with no activity.