travis - another chance to install delete-by-query
travis - another chance to install delete-by-query

visionsky1986/elasticsearch-sql,NLPchina/elasticsearch-sql,c-es-plugin/elasticsearch-sql,visionsky1986/elasticsearch-sql,ottboy4/elasticsearch-sql,ottboy4/elasticsearch-sql,NLPchina/elasticsearch-sql,NLPchina/elasticsearch-sql,c-es-plugin/elasticsearch-sql,visionsky1986/elasticsearch-sql,c-es-plugin/elasticsearch-sql,ottboy4/elasticsearch-sql