Update swift drive audit script/config to latest

The swift-drive-audit-nextgen.erb is updated with the latest
swift merge and also the swift-drive config to incluse the latest
options available.
Fixed typo
updated for picking proper log file

If CentOS then it will pick jut /var/log/kern but anything else it will
be /var/log/kern.log file. Also changed Vars to lowercase
Merge pull request #32 from btorch/storage_changes

Storage changes