`_run_tests()` accepts subdir argument (to run a workunit with
the passed in sub-directory as cwd). One invocation was missing
the subdir argument causing `subdir` tag in yaml to be ineffective.
Signed-off-by: Venky Shankar <vshankar@redhat.com>
p.spawn(_run_tests, ctx, refspec, role, tests,
config.get('env'),
basedir=config.get('basedir','qa/workunits'),
+ subdir=config.get('subdir'),
timeout=timeout,
cleanup=cleanup,
coverage_and_limits=not config.get('no_coverage_and_limits', None))