Added automated generating sample config file

* Automated generating config file was added
* Flake8 errors were fixed
Small improvements
Changed method names
Added test for transient cluster
Small changes in method "poll_cluster_status"
Added integration test for Vanilla 2.4.1

* Integration test for testing Vanilla 2.4.1 has been added
* File edp-java-2.x.x.jar has been added
* File edp-java-1.2.1.jar has been renamed into edp-java-1.x.x.jar
* Configs for Java jobs to check EDP for Vanilla 2.4.1 has been added
Changed test for transient cluster

* Now test for transient cluster uses Vanilla 2.4.1
* Logging was improved