ACS-2151: Initial definitions for get StorageProps endpoint.

[mpichura]

This PR introduces storage properties related endpoint definitions. It includes changes provided in PR#141 which will be closed.

• Added a new GET endpoint definition to get storage properties /nodes/{nodeId}/storage-info/{contentPropName}
• Added 2 new POST endpoint definitions for archive (/nodes/{nodeId}/storage-info/{contentPropName}/archive) and archive-restore (/nodes/{nodeId}/storage-info/{contentPropName}/archive-restore) operations
• Added contentPropNameParam path parameter definiotn
• Added ContentStorageInfo model object definition to handle StorageProps exposure in response
• Added request body object definitions for POST endpoints (RestoreArchivedContentRequest, ArchiveContentRequest)
• Added a new Swagger/API Explorer tag called 'storage-info' to group StoragProps related endpoints

[CLAassistant]

All committers have signed the CLA.