style(zaza/openstack/charm_tests/mysql/test_prometheus_mysql_exporter.py): Update docstring style
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@@ -36,8 +36,10 @@ class PrometheusMySQLExporterTest(MySQLBaseTest):
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):
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"""Exec check cmd on each unit in the application.
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:param str cmd: The check command run on unit.
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:param str expected: Expected result code.
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:param cmd: The check command run on unit
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:type cmd: str
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:param expected: Expected result code
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:type expected: str
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"""
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for unit in zaza_model.get_units(self.application):
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result = zaza_model.run_on_unit(unit.name, cmd)
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