Revert "EknSearch Domain: made shards list member public."
Revert "EknSearch Domain: made shards list member public."

This reverts commit 00385a93a83fc9ec410970ce5b51876c110c5616.

endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib