LocalShell runner fails on "No such file or directory"

[vholer]

When LocalShell is directly used to run Slurm CLI commands, the execution of the commands fails on "no such file or directory"

galaxy.jobs.runners.cli DEBUG 2019-01-25 19:13:53,789 [p:3868,w:1,m:0] [ShellRunner.work_thread-0] (5) submitting file: /opt/galaxy/database/jobs_directory/000/5/galaxy_5.s
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galaxy.jobs.runners ERROR 2019-01-25 19:13:53,964 [p:3868,w:1,m:0] [ShellRunner.work_thread-0] (5) Unhandled exception calling queue_job
Traceback (most recent call last):
  File "lib/galaxy/jobs/runners/__init__.py", line 113, in run_next
    method(arg)
  File "lib/galaxy/jobs/runners/cli.py", line 98, in queue_job
    returncode, stdout = self.submit(shell, job_interface, ajs.job_file, galaxy_id_tag, retry=MAX_SUBMIT_RETRY)
  File "lib/galaxy/jobs/runners/cli.py", line 130, in submit
    cmd_out = shell.execute(job_interface.submit(job_file))
  File "lib/galaxy/jobs/runners/util/cli/shell/local.py", line 47, in execute
    p = Popen(cmd, stdin=None, stdout=outf, stderr=PIPE)
  File "/usr/lib/python2.7/subprocess.py", line 394, in __init__
    errread, errwrite)
  File "/usr/lib/python2.7/subprocess.py", line 1047, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

as the Popen function call inside LocalShell.execute gets whole command including arguments as a single string cmd (e.g.: 'sbatch /opt/galaxy/database/jobs_directory/000/6/galaxy_6.sh'):

galaxy/lib/galaxy/jobs/runners/util/cli/shell/local.py

Lines 45 to 47 in 0b95564

	def execute(self, cmd, persist=False, timeout=DEFAULT_TIMEOUT, timeout_check_interval=DEFAULT_TIMEOUT_CHECK_INTERVAL, **kwds):
	outf = TemporaryFile()
	p = Popen(cmd, stdin=None, stdout=outf, stderr=PIPE)