Adds itest for search.

Fixes storing stuff we shouldn't in StoreOperation, including
isDeleted which apparently WILL SILENTLY BREAK SEARCH.
Merge branch 'gh299-itest-search'

Conflicts:
	src/main/java/com/basho/riak/client/core/operations/StoreOperation.java
	src/test/java/com/basho/riak/client/core/operations/itest/ITestBase.java