Move adb_keys to product partition

/adb_keys will be moved to /product/etc/security as it's a
product-specific file. To prevent regression, /adb_keys will be a
symlink to the new location.

Bug: 353430323
Test: boot and connect adb with ADB_VENDOR_KEYS
Change-Id: Ie5f50b590f4f2fce8630c87be54a175ff5cedae3
diff --git a/tests/sepolicy_tests.py b/tests/sepolicy_tests.py
index af47938..bc3ed3d 100644
--- a/tests/sepolicy_tests.py
+++ b/tests/sepolicy_tests.py
@@ -44,6 +44,10 @@
         "/system/product/vendor_overlay/",
         "/system/system_ext/overlay/",
         "/system_ext/overlay/",
+
+        # adb_keys_file hasn't been a system_file_type
+        "/product/etc/security/adb_keys",
+        "/system/product/etc/security/adb_keys",
     ]
 
     return pol.AssertPathTypesHaveAttr(partitions, exceptions, "system_file_type")