AQS RESTBase: Use full path to the server module script
Either because of multiple symlinks used on the path to the actual
server script file or, possibly, because of the somehow wrong working
directory, RESTBase fails to start as it is not able to find said file.
This patch instructs service-runner to use the full path to the server
Note: this should be further investigated, but unblocks the imminent
need of the Analytics team.