Description of problem:
------------------------
The fix for https://bugzilla.redhat.com/show_bug.cgi?id=1419186 was to get Chargeback reports to skip hourly rollups that are older than the VM itself.

I did some investigation while verifying this BZ and found that CFME collects metrics for resources before resource creation.
 
vm.metric_rollups.order(:timestamp).where(:capture_interval_name =>
'hourly').first.timestamp
=> Mon, 13 Feb 2017 21:00:00 UTC +00:00

vm.created_on
=> Mon, 13 Feb 2017 22:02:53 UTC +00:00

BZ 1419186 affects versions > 5.6 only.So, the fix is relevant to 
CFME version > 5.6. 

In 5.6, Chargeback reports do not skip hourly rollups that are older than VMs.
In 5.7, Chargeback reports skip hourly rollups that are older than VMs.


Version-Release number of selected component (if applicable):
--------------------------------------------------------------
5.7.1.3


How reproducible:
-----------------
Always


Steps to Reproduce:
-------------------
1.Manage a provider.Enable C&U collection for the provider.


Actual results:
---------------
CFME collects C&U metrics even before resource creation.


Expected results:
-----------------
It's not necessary for CFME to collect C&U metrics before resource creation.


Additional info:
----------------