Some ensemble `run` directories don't get copied over to HPC

[Aariq]

Bug Description

When running an ED2 model, start_model_runs() sometimes fails to copy some ensembles in the run directory to a remote host (HPC). One possible reason for this this is that rsync is currently being run inside of a for-loop and maybe there are some limits to how many connections to the server are open or how often connections can be made. It'll be more efficient to just rsync all the ensemble files over at once outside of a for-loop anyways, even if it doesn't fix this bug.

It's either happening here:

pecan/base/workflow/R/start_model_runs.R

Lines 97 to 102 in f5194f8

	PEcAn.remote::remote.copy.to(
	host = settings$host,
	src = file.path(settings$rundir, run_id_string),
	dst = settings$host$rundir,
	delete = TRUE)
	}

Or maybe here (can't remember)

pecan/base/workflow/R/start_model_runs.R

Lines 132 to 141 in f5194f8

	out <- PEcAn.remote::start_qsub(
	run = run,
	qsub_string = settings$host$qsub,
	rundir = settings$rundir,
	host = settings$host,
	host_rundir = settings$host$rundir,
	host_outdir = settings$host$outdir,
	stdout_log = "stdout.log",
	stderr_log = "stderr.log",
	job_script = "job.sh")

To Reproduce

difficult to reproduce, sorry.

Expected behavior

All files for ensemble runs should be copied over and if they can't be, there should be an informative warning or error.

Additional context

Add any other context about the problem here.