Switching build metrics durations from seconds to milliseconds
Switching build metrics durations from seconds to milliseconds

Bug: 148526619
Test: rm ../../out -rf && ./busytown/androidx.sh # and see that the configuration duration is closer to 54000 than to 54
Change-Id: If784d27209e4e3ae9d005af02b9700a54885a055

androidx/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx