glance_usage_audit.py gives the summary of all exists within audit period along with details of failed exists. Some refactoring in nova_usage_audit is also included.
incorporated the review changes and optimized the old_images_query
correcting the old_launches query to the optimized one
removing the unwanted old file
Merge pull request #210 from manalilatkar/glance_usage_audit

Glance Usage Audit