Change the dea ctl script to run the dea as vcap

* we had to create the data directory in the script so we could change the owner to vcap

Signed-off-by: Alex Jackson <ajackson@pivotallabs.com>
Echo PIDFILE *after* directory creation
Merge pull request #101 from cloudfoundry/dea_as_vcap

Change the dea ctl script to run the dea as vcap