Merge "simpleperf: add test_monitor.py to run script tests." am: 6f7aa44440 am: 24bd386a39 am: 4d81639ef7

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/1349268

Change-Id: I5c1985b54aa0b5a25fb95a5ce0cb9eaf0ae9d5b4