Github user felixcheung commented on the issue:
https://github.com/apache/zeppelin/pull/2504
I get that, I see one test matrix is explicitly setting dist to trusty, and
so I assume some tests passes on trusty at least
e2e test
https://github.com/apache/zeppelin/pull/2504/files#diff-354f30a63fb0907d4ad57269548329e3R54
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