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Before this fix the current implementation in combination with the most recent openstacksdk (1.2.0) resulted in a list containing the default values and another list inside this list containing the value of clouds_yaml_path. The clouds_yaml_path value gets now added directly to the list only if it was set. Change-Id: I3c3b6f59393928d098e9b80c55b87fc6ee1e9912