supply labels to k8s workflow runner

[johnbradley]

Calrissian now has support for supply labels: Duke-GCB/calrissian#48
This can be done by adding --pod-labels <yaml_file> to the calrissian command line.
The <yaml_file> can be YAML or JSON dictionary of labels to be applied to pods created by calrissian.
This would help with debugging and cleanup.

Code where we build arguments to clarissian:

lando/lando/k8s/jobmanager.py

Lines 171 to 175 in da2c40e

	command_parts.extend(["--tmp-outdir-prefix", Paths.TMPOUT_DATA + "/",
	"--outdir", Paths.OUTPUT_RESULTS_DIR + "/",
	"--max-ram", self.job.job_flavor_memory,
	"--max-cores", str(self.job.job_flavor_cpus)
	])

Code where we pass labels to k8s for the job that runs calrissian:

lando/lando/k8s/jobmanager.py

Line 193 in da2c40e

labels = self.make_job_labels(JobStepTypes.RUN_WORKFLOW)