Restore larger max request body size

76b835d removed the dropshot
configuration that bumped the sled agent's max request size to 1M. The
sled agent needs to be able to handler larger POSTs, so restore that
parameter.

sled-agent/src/server.rs

@@ -72,6 +72,10 @@ impl Server {
 
         let dropshot_config = dropshot::ConfigDropshot {
             bind_address: SocketAddr::V6(sled_address),
+
+            // bump up size to handle large POSTs
+            request_body_max_bytes: 1024 * 1024,
+
             ..config.dropshot
         };
         let dropshot_log = log.new(o!("component" => "dropshot (SledAgent)"));