Allow AOSP processes to read pm_prop

am: 0f5ad4e5

Change-Id: Idcf4b52877a51c2c330a72ba416076c686e29535

private/coredomain.te

+get_prop(coredomain, pm_prop)

public/domain.te

@@ -450,6 +450,10 @@ neverallow * hidl_base_hwservice:hwservice_manager find;
 neverallow { domain -init } default_prop:property_service set;
 neverallow { domain -init } mmc_prop:property_service set;
 
+# Only core domains are allowed to access package_manager properties
+neverallow { domain -init -system_server } pm_prop:property_service set;
+neverallow { domain -coredomain } pm_prop:file no_rw_file_perms;
+
 # Do not allow reading device's serial number from system properties except form
 # a few whitelisted domains.
 neverallow {