Updated keyvaluedriver interface

internal/drivers/keyvaluedriver/interface.go

@@ -2,6 +2,6 @@ package keyvaluedriver
 
 // KeyValueStoreInterface is an interface for a key value storage
 type KeyValueStoreInterface interface {
-	Get(key *string) *string
-	Set(key *string, value interface{}) error
+	Get(key *string) string
+	Set(key *string, value *string) error
 }