Add vendor/xts/gts-tests/hostsidetests/stagedinstall to TEST_MAPPING

Test: atest --dry-run\
  --test-mapping \
  frameworks/base/services/core/java/com/android/server/pm
Bug: 148664742
Change-Id: Id4e746d9925edd061e40729361508eafe749e7e6
1 file changed