Fix [excon][WARNING] Invalid Excon request keys: :host exception.

lib/fog/bare_metal_cloud/compute.rb

@@ -75,7 +75,7 @@ module Fog
           end
 
           begin
-            response = @connection.request(params.merge!({:host => @host}))
+            response = @connection.request(params)
           rescue Excon::Errors::HTTPStatusError => error
             raise case error
             when Excon::Errors::NotFound