Add E103 fixture

[srerickson]

Adds a fixture for E103: object v1 declares OCFL v1.1, v2 declares OCFL v1.0

[pwinckles]

rocfl:

Object ark:/12345/bcd987 is invalid
  Errors:
    1. [E103] (v1) Inventory 'type' must be 'https://ocfl.io/1.0/spec/#inventory' or earlier. Found: https://ocfl.io/1.1/spec/#inventory

(I validate in reverse chronological order which is why it flagged the problem in v1, and is perhaps not ideal here.)

[zimeon]

Fixture looks good to me.

ocfl-py gives a bad error message:

> ./ocfl-validate.py fixtures/1.1/bad-objects/E103_older_spec_v2
[E038a] OCFL Object v2 inventory `type` attribute has wrong value (expected https://ocfl.io/1.1/spec/#inventory, got https://ocfl.io/1.0/spec/#inventory) (see https://ocfl.io/1.0/spec/#E038)
INFO:ocfl.object:OCFL object at fixtures/1.1/bad-objects/E103_older_spec_v2 is INVALID

[awoods]

Looks good. Thanks, @srerickson !

[zimeon]

Fixed error detection and message in ocfl-py:

ocfl-py> ./ocfl-validate.py fixtures/1.1/bad-objects/E103_older_spec_v2
[E103] OCFL Object v2 inventory conforms to specification version 1.0 which is an earlier version than the v1 inventory which conforms to specification version 1.1 (see https://ocfl.io/1.0/spec/#E103)
INFO:ocfl.object:OCFL object at fixtures/1.1/bad-objects/E103_older_spec_v2 is INVALID