Use specific names for worker types
Use specific names for worker types

__class__.__name__ will give the variable name and not the class
name. This lead to worker list getting overwritten since the
__class__.__nam__ always returned the same value.

Change-Id: Icd36fce33f10145f49669fff932ba9da4ab48e21
Reviewed-on: http://review.couchbase.org/52082
Reviewed-by: thomas anderson <5f50a84c1fa3bcff146405017f36aec1a10a9e38@couchbase.com>
Tested-by: Michael Wiederhold <a17fed27eaa842282862ff7c1b9c8395a26ac320@couchbase.com>

mikewied/spring,couchbase/spring,mikewied/spring,couchbase/spring