Organize product vars for adding properties

Properties for <partition>/build.prop are now added via
PRODUCT_<PARTITION>_PROPERTIES.

PRODUCT_SYSTEM_PROPERTIES is added. PRODUCT_SYSTEM_DEFAULT_PROPERTIES
will be deprecated.

PRODUCT_VENDOR_PROPERTIES is added. PRODUCT_PROPERTY_OVERRIDES and
PRODUCT_DEFAULT_PROPERTY_OVERRIDES will be deprecated in favor of the new
variable.

For other partitions (odm, system_ext, product), there is no change.

Bug: 117892318
Test: m
Change-Id: I98f3b5d0da661b3ad75260a23754e655103b7a44
diff --git a/target/product/base_system.mk b/target/product/base_system.mk
index d5f051a..54a0230 100644
--- a/target/product/base_system.mk
+++ b/target/product/base_system.mk
@@ -360,10 +360,10 @@
 endif
 
 PRODUCT_COPY_FILES += system/core/rootdir/init.zygote32.rc:system/etc/init/hw/init.zygote32.rc
-PRODUCT_DEFAULT_PROPERTY_OVERRIDES += ro.zygote=zygote32
+PRODUCT_SYSTEM_PROPERTIES += ro.zygote=zygote32
 
-PRODUCT_SYSTEM_DEFAULT_PROPERTIES += debug.atrace.tags.enableflags=0
-PRODUCT_SYSTEM_DEFAULT_PROPERTIES += persist.traced.enable=1
+PRODUCT_SYSTEM_PROPERTIES += debug.atrace.tags.enableflags=0
+PRODUCT_SYSTEM_PROPERTIES += persist.traced.enable=1
 
 # Packages included only for eng or userdebug builds, previously debug tagged
 PRODUCT_PACKAGES_DEBUG := \