PLT-6355: Use separate Read Replicas for Search. (#6216)

store/sql_post_store.go

@@ -1065,7 +1065,7 @@ func (s SqlPostStore) Search(teamId string, userId string, params *model.SearchP
 
 		list := model.NewPostList()
 
-		_, err := s.GetReplica().Select(&posts, searchQuery, queryParams)
+		_, err := s.GetSearchReplica().Select(&posts, searchQuery, queryParams)
 		if err != nil {
 			l4g.Warn(utils.T("store.sql_post.search.warn"), err.Error())
 			// Don't return the error to the caller as it is of no use to the user. Instead return an empty set of search results.