Revision 05325a35 qa/qa_utils.py

b/qa/qa_utils.py
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  @param node: if passed, it should be the node on which the command
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      should be executed, instead of the master node (can be either a
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      dict or a string)
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  @return: the return code of the command
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  @raise qa_error.Error: if the command fails when it shouldn't or vice versa
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  """
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  if node is None:

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