* As a part of bringing functional testing to plugins, esArchiver gives these plugins a way to capture and reload es indexes without needing to write a bunch of custom code. It works similarly to the elasticDump and ScenarioManager tools that it replaces.

Differences:
  - Streaming implementation allows for much larger archives
  - CLI for creating and using archives
  - Configurable archive location
  - Stores the data in gzipped files (better for source control, searching, large archives)
  - Automatically identifies and upgrades Kibana config documents

Methods:
  - `#load(name)`: import an archive
  - `#loadIfNeeded(name)`: import an archive, but skip the documents what belong to any existing index
  - `#unload(name)`: delete the indexes stored in an archive

CLI operations:
  - `./bin/es_archiver save <name> [index patterns...]`: save the mapping and documents in one or more indexes that match the wild-card patterns into an the `<name>` archive
  - `./bin/es_archiver load <name>`: load the mapping and documents from the `<name>` archive

* [functional_tests/common/nagivate] check for statusPage

* [es_archiver] move bins into new scripts dir

* [functional_tests/apps/context] use esArchiver

* [esArchiver] general improvements after showing to a few folks

 - remove auto-upgrading config doc logic (until we have better access to kibana version info)
 - export unload command
 - remove preemptive checks in favor of reacting to errors
 - use type "doc" vs "hit" for doc records (consistency)
 - wrote a bunch of pending tests to think though and plan

* [esArchiver] make log a stream that writes to itself

* [esArchiver] fill in stats and archive format tests

* [esArchiver] splitup action logic

* [esArchiver/cli] fix cli --help output and comment

* [esArchiver] remove type-based param coercion

* [esArchiver/log] use strings for log levels

* [esArchvier] remove unused var

* [esArchiver/indexDocRecordsStream] add tests

* [esArchive] fill in remaining tests

* [esArchiver] fix dem tests

* [eslint] remove unused vars

* [esArchiver/loadIfNeeded] fix call to load()

* [esArchiver] remove loadDumpData helpers