Merge "aconfig: add missing string header to template" into main am:...

Merge "aconfig: add missing string header to template" into main am: 268e4455 am: e857396e am: d3faf89b

Original change: https://android-review.googlesource.com/c/platform/build/+/2783599



Change-Id: I69e2e9a7eba2c0bdc99accb444bba46acc92b2c6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>