Revert "HM/EG: added second solr instance to start testing Sharding"

This reverts commit 5edfcbf4e12735ba18132502cab2bce0d413bae7.
TS/TJ: Updated Weightless-Core deps.
Revert "Revert "HM/EG: added second solr instance to start testing Sharding""

This reverts commit 4afb5338c4d807ed68c02110eb258c4553e3f82b.
EG/HM: Tested sorting relevancy with with 2 shards