Temporarily disable insert planner tests (CDH-19856).

Change-Id: Ibcf914b87fb0ae958c5039a7cd2e8be72aa4295e
Reviewed-on: http://gerrit.ent.cloudera.com:8080/3109
Reviewed-by: Lenni Kuff <lskuff@cloudera.com>
Reviewed-by: Alex Behm <alex.behm@cloudera.com>
Tested-by: Alex Behm <alex.behm@cloudera.com>