ha-sort-diff-file Sort files

Ensure that the checksum files are sorted and uniq'd before
diff sees them.

This ensures, for example, when the user has

```yaml
cache:
bundler: true
directories:
- 'vendor/bundle'
```

the we do not have multiple checksums of the identical files.

Hiro Asari avatar Hiro Asari

Push event #181.2 passed

  • Ran for
AMD64
Ruby: 2.1.5
Git

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