Restructure testing with kbn-test package
- Run with multiple configs, move cli options to config
- Package-ify kbn-test
- Eventually we'll have functional_test_runner live in a package
of its own, and then this kbn-test will use that as a dependency,
probably still as a devDependency.
- Implement functional_tests_server
- Collapse single and multiple config apis into one command
Use kbn-es
Replace es_test_cluster + es_test_config with kbn/test utils
Implement new createEsTestCluster
Improve scripts, jsdocs, cli top-level tools
Lift error handling to the top level
* Adding basic syntax highlighting for grok expressions
* Use EUI color palette
* Handle regex tokens, escaped and unescaped
* Return token for escaped content
* Add functional test
* Using higher-contrast colors
* Removing comment I used for developing the highlight rules
* Using object destructuring
* Removing unnecessary method
This reduces the output from the clusters API in the data processing stage.
Mainly, it throws away a lot of unused fields in `elasticsearch.cluster_stats` and `elasticsearch.cluster_state`
cc @rasroh
* [Monitoring/React] Render ES Nodes Listing with Base Controller
Refactors the ES Nodes Listing to use Base Controller and a React component instead of an Angular directive
* remove another obsolete file
