This is the first drop of the events db import
Update per review comments:
* extract only zep.sql from the backup tar ball
* remove the redundant prevalidate call
* add stderr pipe from subprocess for future processing
* TBD - mariaDB ip/user/password should be extracted from europa environment
Merge pull request #4 from zenoss/feature/event_import_1

This is the first drop of the events db import