ErrEACLNotFound error was defined in implementation package. EACL validator
checked this error after the call of eACL storage interface method. Replace
ErrEACLNotFound to core container library. in order to: on the one hand not
use an implementation error, on the other hand, to be able to reuse a
generic type error (404).
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
In #37 we've decided to remove length check, because smart contract would
fail on casting `nil` value from storage to `[]byte` producing FAULT state.
Apparently it does not fail, so we have to check length explicitly.
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
Container get wrapper implements container.Source interface
so it can be used in object service as container storage.
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
