[train] paunch: exit module if config doesn't exist
It's possible that the step directory doesn't exist in a deployment,
just quit the module with no change and move on.
It'll avoid running paunch with empty config.
This will be backported to Train.
Change-Id: I3a5fc2214e7068f1e7aacc0e7a8a681c3f9715e9
(cherry picked from commit b2fe3f2d61
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@ -166,6 +166,9 @@ class PaunchManager:
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log_file=self.log_file)
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if self.config:
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# Do nothing if config path doesn't exist
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if not os.path.exists(self.config):
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self.module.exit_json(**self.results)
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if self.config.endswith('.json'):
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self.module.warn('Only one config was given, cleanup disabled')
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self.cleanup = False
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