Reapply "Add soong installed files to general-tests.zip"

This reverts commit f2685e5c.

Original commit broke building sdk/ndk in post submit.
Fixed with small patch in build/soong

Test: m general-tests
Test: IST_DIR=/usr/local/google/dist/bug TARGET_RELEASE=trunk_staging TARGET_BUILD_VARIANT=userdebug UNBUNDLED_BUILD_SDKS_FROM_SOURCE=true packages/modules/common/build/mainline_modules_sdks.sh
Change-Id: I47e39913878219adec6471a474e3c238c4bdeed1