发起类型为`TaxUsage`的提案，令提取比例(percent)超过百分之百，可以成功发起提案。

[WZJ-Study]

./qoscli tx submit-proposal --proposal-type TaxUsage --title 'test2' --description 'null' --proposer alice --deposit 120000 --dest-address node --percent 2 --max-gas 200000 --indent

上述命令可以成功创建提案，提案内容如下：

$ ./qoscli query proposals --indent
[
  {
    "proposal_content": {
      "type": "gov/TaxUsageProposal",
      "value": {
        "TextProposal": {
          "title": "test2",
          "description": "null",
          "deposit": "120000"
        },
        "dest_address": "address1qgwgmpsrd6anj3qjvjsqztj3xt9v24c4mh77x3",
        "percent": "2.000000000000000000"
      }
    },
    "proposal_id": "1",
    "proposal_status": "Voting",
    "final_tally_result": {
      "yes": "0",
      "abstain": "0",
      "no": "0",
      "no_with_veto": "0"
    },
    "submit_time": "2019-08-21T02:54:07.185939302Z",
    "deposit_end_time": "2019-08-21T02:59:07.185939302Z",
    "total_deposit": "120000",
    "voting_start_time": "2019-08-21T02:54:07.185939302Z",
    "voting_start_height": "12",
    "voting_end_time": "2019-08-21T02:59:07.185939302Z"
  }
]

可以看到提案中提取比例为百分之两百，这里应该在创建提案前检查提取比例是否处于正常范围（0 - 1之间）。

[TokenxyWZY]

fix #330