Enable check of volume size in ebs image test
Enable check of volume size in ebs image test

Since LP #1370177 is partially fixed by
https://review.openstack.org/#/c/188914/

Related-Bug: #1370177
Depends-On: I9ffbb6cf40c1012f774a382cf1dcceba64637e6d
Change-Id: I282f41e5c61b85e10cb86b63c51e67d0da4fce56

hayderimran7/ec2-api,stackforge/ec2-api,hayderimran7/ec2-api,openstack/ec2-api,openstack/ec2-api,stackforge/ec2-api