Default Content of Folder FlinkElasticSearch.

• elasticsearch-6.3.1.jar
• elasticsearch-cli-6.3.1.jar
• elasticsearch-core-6.3.1.jar
• elasticsearch-rest-client-6.3.1.jar
• elasticsearch-rest-high-level-client-6.3.1.jar
• elasticsearch-secure-sm-6.3.1.jar
• elasticsearch-x-content-6.3.1.jar
• httpcore-4.4.6.jar