Updates aws_logs.py to separate log lines with newlines
Updates aws_logs.py to separate log lines with newlines

PiperOrigin-RevId: 368878804

GoogleCloudPlatform/PerfKitBenchmarker,GoogleCloudPlatform/PerfKitBenchmarker,GoogleCloudPlatform/PerfKitBenchmarker,GoogleCloudPlatform/PerfKitBenchmarker