rabbitmq_policy: fix IndexError when no policies exist yet (#33556)
If the list of existing policies is empty, an IndexError would be raised since stdout was blank.
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@ -113,6 +113,8 @@ class RabbitMqPolicy(object):
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policies = self._exec(['list_policies'], True)
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for policy in policies:
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if not policy:
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continue
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policy_name = policy.split('\t')[1]
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if policy_name == self._name:
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return True
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