Fixing issue with connection details and template for the persystsql operator. Updating examples of config files.

PerSystDB: adding job cache to avoid querying mysql job ids. executeOnStart and executeOnStop are now used in the PerSystSqlOperator.

In case sql connection is gone (error 2006), we finalize the connection to avoid memory leaks in mariadb lib.

-CollectAgent and Pusher adapted for special handling of event data
-Handful of other fixes and improvements

-add implementation for calieventdatastore
-requires adaption of CA, Pusher to actually store data in it

-CED should go into separate table
-adds header files for required libdcdb extension
-add other sideshow stuff required for new Cassandra table
-actual implementation outstanding