fix bugs with memdb + vprovider setting

- wasn't setting list of verified providers
- was looping through multilevel keys, not auctionid

x/colinearcore/memdb/biddb.go

@@ -170,8 +170,9 @@ func (b *auctionDB) ForEachAuctionBidList(viewFunc func(string) error) error {
 			item := iter.Item()
 			key := string(item.Key())
 			// require that this be an auction bids key
-			if len(key) > 5 && key[len(key)-5:len(key)-1] == "_bids" {
-				err := viewFunc(key)
+			if len(key) > 5 && key[len(key)-5:] == "_bids" {
+				auctionId := key[:len(key)-5]
+				err := viewFunc(auctionId)
 				if err != nil {
 					return err
 				}