Adding configuration for blocks and mempool blocks amount.

frontend/mempool-frontend-config.sample.json

@@ -9,6 +9,7 @@
   "NGINX_PROTOCOL": "http",
   "NGINX_HOSTNAME": "127.0.0.1",
   "NGINX_PORT": "80",
+  "MEMPOOL_BLOCKS_AMOUNT": 8,
   "BLOCK_WEIGHT_UNITS": 4000000,
   "BASE_MODULE": "mempool"
 }