Github user sohaibiftikhar commented on the issue:
https://github.com/apache/zeppelin/pull/2354
CI looks good now it was initially now working before as for some reason:
`curl -sSL
"http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x51716619E084DAB9"; |
sudo -E apt-key add -`
was returning with no gpg key found.
Build is now fine at:
https://travis-ci.org/sohaibiftikhar/zeppelin/builds/238652785
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