in progress
Merge branch 'develop' into feature/upgrade-statistics
Added commands to generate reports from database and base command class
Fix flake8
Move plugin tests, fix pricing ips without venture command
Merge branch 'feature/upgrade-statistics' into feature/script-to-generate-end-date-of-deprecation

Conflicts:
	src/ralph_pricing/tests/management/test_pricing_statistics.py
add tests
rm needless file
fix flake8
Added pricing asset models
Merge branch 'develop' into feature/script-to-generate-end-date-of-deprecation
Fixed notics
fix flake
Added docstrings
Fix tests
Merge branch 'develop' into feature/script-to-generate-end-date-of-deprecation
ceilometer optimization
code review
Merge pull request #203 from inc0/feature/ceilopricing

ceilometer optimization
fixed DirectoryTimedRotatingFileHandler for python < 2.7.6