[EXT] Added, that the "Benchmark" API can be used on the testing cluster

See http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-benchmark.html#search-benchmark
[EXT] Enabled dynamic scripting by default in the test cluster

See:

* http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/modules-scripting.html#_enabling_dynamic_scripting
* elasticsearch/elasticsearch#5853
* elasticsearch/elasticsearch#5943
[API] Added the "Benchmark" API

See: http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-benchmark.html

Related: elasticsearch/elasticsearch#5406
[API] Added the "Cat Fielddata" API

Related: elasticsearch/elasticsearch@e7e4ef859a9b68ff68ae14204f36c5f92538ed22
[API] Added support for `version` and `version_type` parameters in the "Get Document" API

Related: elasticsearch/elasticsearch#3404
[API] Added the "Search Shards" API

Related: elasticsearch/elasticsearch#5907

See: http://www.elasticsearch.org/guide/en/elasticsearch/reference/master/search-shards.html