Description of problem:
No timeline for the report custom report Policy events for this Week. 

Version-Release number of selected component (if applicable):
 Version 5.9.2.2.20180410215257_6961422 

How reproducible:
Always

Steps to Reproduce:
1. copy the report report Policy events for Last Week to report Policy events for this Week ( change the filter to This week)
2. generate some policy events on a vm
3. check that the events appears on the vm's timeline
4. go to cloud intel/timeline/custom report/Policy events for this Week.


Actual results:
no timeline displayed

Expected results:
See the timeline and the events on it.


Additional info:

worked on previous versions. the same report works with Ec2 and vsphere.