Allow bpfloader to handle 'net_shared' subdirectory

netd.c is moved from netd to tethering mainline module.

Bump BpfLoader to v0.9

Bug: 202086915
Test: cd system/netd; atest
Test: atest TrafficStatsTest NetworkUsageStatsTest
Change-Id: I0b8ba90bbbe4e16d979c4a40d6fdbbaac0d14d27
diff --git a/bpfloader/BpfLoader.cpp b/bpfloader/BpfLoader.cpp
index 7a68894..1fc44f4 100644
--- a/bpfloader/BpfLoader.cpp
+++ b/bpfloader/BpfLoader.cpp
@@ -55,11 +55,16 @@
     const char* const dir;
     const char* const prefix;
 } locations[] = {
-        // Tethering mainline module
+        // Tethering mainline module: tether offload
         {
                 .dir = "/apex/com.android.tethering/etc/bpf/",
                 .prefix = "tethering/",
         },
+        // Tethering mainline module: netd, clatd, ...etc
+        {
+                .dir = "/apex/com.android.tethering/etc/bpf/net_shared/",
+                .prefix = "",
+        },
         // Core operating system
         {
                 .dir = "/system/etc/bpf/",