Revise generation of go/lem benchmarking tarball

Since apex_available change we need to copy libraries explicitly from
APEX to system/{lib,lib64}.

Build the Conscrypt APEX too in case any tests depend on crypto.

Bug: 129332183
Test: Build golem tarball and run ArrayListStress on 32-bit ARM
      dev board.

Change-Id: I310ecd98da9530f653e8c7d0c8368ba2e08f33ff
diff --git a/build/Android.common_path.mk b/build/Android.common_path.mk
index 4cc408e..3403f2d 100644
--- a/build/Android.common_path.mk
+++ b/build/Android.common_path.mk
@@ -156,4 +156,7 @@
 # Testing ART APEX, used in ART device testing.
 TESTING_ART_APEX := com.android.art.testing
 
+# Conscrypt APEX
+CONSCRYPT_APEX := com.android.conscrypt
+
 endif # ART_ANDROID_COMMON_PATH_MK