Add com.android.apex.cts.shim.v1_prebuilt to cuttlefish

updatable_apex.mk no longer installs
com.android.apex.cts.shim.v1_prebuilt.
It has to be installed manually.

Bug: 133217528
Test: run com.android.tests.stageinstall.host
Change-Id: Ib42aac27884733cfe380ef8b12e3b0b5564558ff

shared/device.mk

diff --git a/shared/device.mk b/shared/device.mk
index e3ce05b..82be28d 100644
--- a/shared/device.mk
+++ b/shared/device.mk
@@ -16,6 +16,7 @@
 
 # Enable updating of APEXes
 $(call inherit-product, $(SRC_TARGET_DIR)/product/updatable_apex.mk)
+PRODUCT_PACKAGES := com.android.apex.cts.shim.v1_prebuilt
 
 PRODUCT_COPY_FILES += device/google/cuttlefish_kernel/4.14-x86_64/kernel:kernel