Skip dependencies in case of expected failures

Author: vkarak

reframe/frontend/executors/policies.py

@@ -208,7 +208,7 @@ def runcase(self, case):
  task.skip_from_deps()
  raise TaskExit
 
- if any(self._task_index[c].skipped
+ if any(self._task_index[c].skipped or self._task_index[c].xfailed
  for c in case.deps if c in self._task_index):
  task.do_skip('skipped due to skipped dependencies')
  raise TaskExit
@@ -595,7 +595,7 @@ def deps_succeeded(self, task):
 
  def deps_skipped(self, task):
  # NOTE: Restored dependencies are not in the task_index
- return any(self._task_index[c].skipped
+ return any(self._task_index[c].skipped or self._task_index[c].xfailed
  for c in task.testcase.deps if c in self._task_index)
 
  def _abortall(self, cause):