Merge branch 'activity' of http://120.27.238.55:7000/r/exchange into activity

xiaoyong931011

2021-03-31 a8c2a27cada164f0326977faaf4c292116f29085

 src/main/java/com/xcong/excoin/modules/contract/entity/ContractHoldOrderEntity.java

@@ -163,4 +163,9 @@
     */
//    @TableField(exist = false)
    private BigDecimal rewardAmount;

    /**
     * 维持保证金
     */
    private BigDecimal holdBond;
}