* Add Ingest pipeline methods to Elasticsearch execution module
* Refactor Elasticsearch execution module and properly handle exceptions
* Throw CommandExecutionError in methods applicable for different Elasticsearch versions
* Refactor Elasticsearch states to reflect execution module changes
* Add state for managing Elasticsearch pipelines
* Fix few typos in Elasticsearch module, return None when deleted document doesn't exist
* Implements stats and health methods for Elasticsearch
* Add Elasticsearch methods to open/close index, manage search templates and repositories
* Merge existing Elasticsearch states into single one, add Search Template handling
* Add index alias state for Elasticsearch, fix documentation
* Catch all global exceptions in Elasticsearch states, unit test all of them
* Implement few Unit tests for Elasticsearch execution module, merge fixes into deprecated elastic states
* Implement additional unit tests for Elasticsearch execution module
* Finalize Elasticsearch module documentation
