Call SetShmBase() in init_rs

The ShmEventLoop rust test was using /dev/shm/aos and breaking out of
the sandbox. Fix that.

Change-Id: I14db8b500a03a66fef41399c4cea334ff79b217f
Signed-off-by: James Kuszmaul <james.kuszmaul@bluerivertech.com>
diff --git a/aos/testing/BUILD b/aos/testing/BUILD
index 787fdda..02459e4 100644
--- a/aos/testing/BUILD
+++ b/aos/testing/BUILD
@@ -8,6 +8,7 @@
     visibility = ["//visibility:public"],
     deps = [
         "//aos:init",
+        "//aos/testing:tmpdir",
         "@com_github_gflags_gflags//:gflags",
         "@com_github_google_glog//:glog",
         "@com_google_googletest//:gtest",
@@ -100,6 +101,9 @@
     hdrs = ["tmpdir.h"],
     target_compatible_with = ["@platforms//os:linux"],
     visibility = ["//visibility:public"],
+    deps = [
+        "//aos/ipc_lib:shm_base",
+    ],
 )
 
 cc_library(