[BugFix: ZSTACK-35167] fix ChangeLoadBalancerBackendServer cli when param is json
[BugFix: ZSTACK-35167]
fix ChangeLoadBalancerBackendServer cli when param is json

zstackio/zstack-utility,zstackorg/zstack-utility,zstackorg/zstack-utility,zstackio/zstack-utility,zstackorg/zstack-utility,zstackio/zstack-utility