common set data dir
remove set data dir from client
fix single process error without datadir
rename log level setter
add isSingle check
simplify data server includes
simplify data server includes
better name on server data dir
add engine data dir concept
set data dir on Data Server
better setter of datadir
add data dir getter from engine
remove set data dir on server
add set data dir on mpiworker
remove set data dir on agentfactory
change mpi tag