Boaz Leskes b08352047d Introduce IndexShardTestCase (#20411)
Introduce a base class for unit tests that are based on real `IndexShard`s. The base class takes care of all the little details needed to create and recover shards. 

This commit also moves `IndexShardTests` and `ESIndexLevelReplicationTestCase` to use the new base class. All tests in `IndexShardTests` that required a full node environment were moved to a new `IndexShardIT` suite.
2016-09-12 18:20:25 +02:00
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2016-09-12 18:20:25 +02:00