Fix for issue ZEN-9297
Added objects from old zenpack
Merge branch 'develop' of https://github.com/ssirushchyshyn/ZenPacks.zenoss.MySqlMonitor into dev
Moved monitoring template from the previous zenpack version
Started on unit test for datasource plugin
Added unit tests for datasource plugin
Started on  migration script for the mysql connection string
Pep8 modifications
Removed unnecessary adapter from configuration file
Added checking if the previous properties contain any values
Merge pull request #46 from ssirushchyshyn/develop

Added objects from previous zenpack version and migration script for connection string