自定义生成策略时，Map容量设置不准确，会导致无必要的扩容

eladmin-common/src/main/java/me/zhengjie/config/RedisConfig.java

@@ -106,7 +106,7 @@ public class RedisConfig extends CachingConfigurerSupport {
     @Override
     public KeyGenerator keyGenerator() {
         return (target, method, params) -> {
-            Map<String,Object> container = new HashMap<>(4);
+            Map<String,Object> container = new HashMap<>(8);
             Class<?> targetClassClass = target.getClass();
             // 类地址
             container.put("class",targetClassClass.toGenericString());