Merge "Migrate insertkeys.py to Python3" am: eb424f43f2 am: 95824753b2 am: 568c1e2e54 am: 6dc85e7d82

Original change: https://android-review.googlesource.com/c/platform/system/sepolicy/+/1908682

Change-Id: I81cf7f4d5f51e6a2a8d14d5aa0df54edc02915a0