Label /product/lib(64)/* as system_lib_file

Bug: 138545724
Test: n/a

(cherry picked from commit 3d58603623dd67b181fb965f437c552428c979bc)

Change-Id: I03c2430778f1112679090bb7aad234c907384ea1
CRs-Fixed: 2491659

prebuilts/api/29.0/private/file_contexts

@@ -403,6 +403,8 @@
 /(product|system/product)/etc/selinux/product_service_contexts   u:object_r:service_contexts_file:s0
 /(product|system/product)/etc/selinux/product_mac_permissions\.xml u:object_r:mac_perms_file:s0
 
+/(product|system/product)/lib(64)?(/.*)?                         u:object_r:system_lib_file:s0
+
 #############################
 # Product-Services files
 #

private/file_contexts

@@ -403,6 +403,8 @@
 /(product|system/product)/etc/selinux/product_service_contexts   u:object_r:service_contexts_file:s0
 /(product|system/product)/etc/selinux/product_mac_permissions\.xml u:object_r:mac_perms_file:s0
 
+/(product|system/product)/lib(64)?(/.*)?                         u:object_r:system_lib_file:s0
+
 #############################
 # Product-Services files
 #