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Feature #18180

Updated by Peter Amstutz about 2 years ago

* container_request scheduling_parameter['preemptible'] doesn't have to match the setting of the cluster 
 * ability to choose spot instances when submitting workflow with arvados-cwl-runner 
 ** --enable-preemptible --disable-preemptible 
 ** gets passed through to the arvados-cwl-runner leader instance 

 * --disable-preemptible opts out for whole workflow (overrides) 
 * --enable-preemptible opts in for the whole workflow  
 * Individual steps can opt out if preemptible is enabled 

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