1.1.4 的canal.instance.connectionCharset 不能识别

[wjf989]

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• I have checked the FAQ of this repository and believe that this is not a duplicate.

environment

• canal version
  1.1.4
• mysql version
  5.5.6

Issue Description

canal开启后日志里面提示：
o.s.beans.GenericTypeAwarePropertyDescriptor - Invalid JavaBean property 'connectionCharset' being accessed! Ambiguous write methods found next to actually used [public void com.alibaba.otter.canal.parse.inbound.mysql.AbstractMysqlEventParser.setConnectionCharset(java.lang.String)]: [public void com.alibaba.otter.canal.parse.inbound.mysql.AbstractMysqlEventParser.setConnectionCharset(java.nio.charset.Charset)]

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Expected behaviour

Actual behaviour

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