Allow service managers access to apex data.

VintfObject will monitor for /apex directory for VINTF data.
Add permissions for service managers to read this data.

Bug: 239055387
Test: m && boot
Change-Id: I179e008dadfcb323cde58a8a460bcfa2825a7b4f
diff --git a/private/keystore.te b/private/keystore.te
index 8e681b1..3b4cc37 100644
--- a/private/keystore.te
+++ b/private/keystore.te
@@ -37,3 +37,6 @@
 # system property, an exception is added for init as well.
 set_prop(keystore, keystore_crash_prop)
 neverallow { domain -keystore -init } keystore_crash_prop:property_service set;
+
+# keystore is using apex_info via libvintf
+use_apex_info(keystore)