buildSrc runtime -> runtimeOnly
buildSrc runtime -> runtimeOnly

Bug: 173642365
Test: Treehugger runs busytown/androidx.sh
Change-Id: I4036115594322e4169643b59a1b89a73da9b5394

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