Add system_ext/apex/*/bin to fs_config

Flattened APEXes can be installed in /system_ext.
Especially, GSI have both flattened/unflattened apexes so that it can
run with updatable devices and non-updatable devices as well.

Bug: 145963716
Test: flash GSI on P device and boot
Change-Id: I3a941672446a5353517243a851739a66f4252617
diff --git a/libcutils/fs_config.cpp b/libcutils/fs_config.cpp
index 2b39ca6..dc31b28 100644
--- a/libcutils/fs_config.cpp
+++ b/libcutils/fs_config.cpp
@@ -86,6 +86,7 @@
     { 00751, AID_ROOT,         AID_SHELL,        0, "system/xbin" },
     { 00751, AID_ROOT,         AID_SHELL,        0, "system/apex/*/bin" },
     { 00751, AID_ROOT,         AID_SHELL,        0, "system_ext/bin" },
+    { 00751, AID_ROOT,         AID_SHELL,        0, "system_ext/apex/*/bin" },
     { 00751, AID_ROOT,         AID_SHELL,        0, "vendor/bin" },
     { 00755, AID_ROOT,         AID_SHELL,        0, "vendor" },
     { 00755, AID_ROOT,         AID_ROOT,         0, 0 },
@@ -209,6 +210,7 @@
     { 00755, AID_ROOT,      AID_SHELL,     0, "system/xbin/*" },
     { 00755, AID_ROOT,      AID_SHELL,     0, "system/apex/*/bin/*" },
     { 00755, AID_ROOT,      AID_SHELL,     0, "system_ext/bin/*" },
+    { 00755, AID_ROOT,      AID_SHELL,     0, "system_ext/apex/*/bin/*" },
     { 00755, AID_ROOT,      AID_SHELL,     0, "vendor/bin/*" },
     { 00755, AID_ROOT,      AID_SHELL,     0, "vendor/xbin/*" },
     { 00644, AID_ROOT,      AID_ROOT,      0, 0 },