Rollback snakeyaml version (Fixes IT tests)
Rollback snakeyaml version (Fixes IT tests)

The stats gen (#1787) change introduced a version of snakeyaml which
is incompatible with arquillian-cube (between 1.19 and 1.23 they
remove some methods).

This was picked up by the integration tests, but overriden to submit.

This change pins the snakeyaml version at 1.19, thereby allowing the
integration tests to run again.


Reviewers: Enrico Olivelli <eolivelli@gmail.com>

This closes #1817 from ivankelly/fix-it
sijie/bookkeeper,apache/bookkeeper,sijie/bookkeeper,sijie/bookkeeper,apache/bookkeeper,sijie/bookkeeper,apache/bookkeeper,sijie/bookkeeper,sijie/bookkeeper,sijie/bookkeeper,apache/bookkeeper,apache/bookkeeper,sijie/bookkeeper,apache/bookkeeper