Remove sshd dependency, run ompi jobs directly under starter #6403
Remove sshd dependency, run ompi jobs directly under starter #6403

Using condor_chirp, we can get the command to run ompi jobs
directly under the starter by redirecting mpirun's ssh commands
into files in spool, then fetch those files on each execute node
and run the commands. This is accomplished using the two helper scripts,
get_orted_cmd.sh and orted_launcher.sh.

Some other tweaks were made to openmpiscript, including better handling
of multicore jobs and prevention of binding to cpu cores.

htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor