Bug/214

Bug fix for issue #214
I think we have a problem if the cygnus user runs a Java-based process other than Cygnus.

What about filtering by the `cygnusagent` token as discussed offline? Something like:

    FLUME_PID=$(ps -f -u ${CYGNUS_USER} | grep ${CYGNUS_AGENT} | grep ${CYGNUS_PROCESS} | awk '{ print $2 }')

Additionally, please observe the `grep ${CYGNUS_USER}` seems to be unnecessary due to you are already filtering by the user in the `ps` command, right?