Add list_server_volumes request method for block storage service.

lib/fog/hp/requests/compute/list_server_volumes.rb

@@ -0,0 +1,49 @@
+module Fog
+  module Compute
+    class HP
+      class Real
+
+        # List all volumes attached to a server
+        #
+        # ==== Parameters
+        # * server_id<~Integer> - Id of server to list attached volumes for
+        #
+        # ==== Returns
+        # * response<~Excon::Response>:
+        #   * body<~Hash>:
+        #   * 'volumeAttachments'<~Array>:
+        #     * <~Hash>
+        #       *  'device':<~String>  - The name of the device
+        #       *  'serverId':<~Integer>  - The server id to which thsi volume is attached
+        #       *  'id':<~Integer>  - The volume id
+        #       *  'volumeId':<~Integer>  - The volume id
+        def list_server_volumes(server_id)
+          response = request(
+            :expects  => 200,
+            :method   => 'GET',
+            :path     => "servers/#{server_id}/os-volume_attachments"
+          )
+          response
+        end
+
+      end
+
+      class Mock  # :nodoc:all
+
+        def list_server_volumes(server_id)
+          response = Excon::Response.new
+          volumes = []
+          if server = self.data[:servers][server_id]
+            volumes = server['volumeAttachments']
+            response.status = 200
+            response.body = { 'volumeAttachments' => volumes }
+            response
+          else
+            raise Fog::Compute::HP::NotFound
+          end
+        end
+
+      end
+    end
+  end
+end