PayloadCheckQParserPlugin Increase the operator parameter

[Dawn]

Hi:
        Hope PayloadCheckQParserPlugin can support operator parameters, support 
the operator is a phrase or or multiple values.

        As PayloadScoreQParserPlugin 

         1. Analyze parameters. localParams.get("operator", DEFAULT_OPERATOR);

         2. Create SpanQuery, call PayloadUtils.createSpanQuery(String field, 
String value, Analyzer analyzer, String operator)