remove .gitignore from acmeair-driver
Update jMeter script and clean up.

* The max value for the user id random value was adjusted to match the default customer size used by the loader.
* Renamed the dataset files from .cvs to .csv and updated the jMeter script to reference the files correctly.
* Removed a section of the script that was not used.
* Updated ExtractFlightsInfoFunction to check if a Java system property, usePureIDs, was passed in.   The usePureIDs property will be used when the jMeter script is used with Acme Air running on NodeJS
Update pom.xml files

Changed pom.xml to include the acmeair-driver module, and added a jmeter.property that will be used by the acmeair-driver module/pom.xml
Also updated the source and target version of the main pom.xml from 1.5 to 1.6 to resolve compiler compliance errors seen in eclipse when the project is set to 1.5.