add crontab like job-control

[neo-technology-build-agent]

Issue by jexp Thursday Apr 20, 2017 at 13:27 GMT Originally opened as https://github.com/neo4j-contrib/neo4j-apoc-procedures/issues/404

---

apoc.periodic.schedule -> allow cron-like-expressions

apoc.periodic.at('name', statement, 'cron-like-expression')