def complete_key(self, key):
        if key not in self.completed:
            self.completed.append(key)
Generates a random password to be used by the DB instance.
dataset/ETHPy150Open HHammond/kcbo/kcbo/statistical_tests/utils.py/StatisticalTest.complete_key--crossover with--dataset/ETHPy150Open GoogleCloudPlatform/PerfKitBenchmarker/perfkitbenchmarker/linux_benchmarks/mysql_service_benchmark.py/_GenerateRandomPassword