[storage-metrics] Add the tool to debug bundle

This lets the debug builds have storage-metrics tool in the system by
default.

Test: Built and booted core debug build and verified tool exists.

Change-Id: Ic3f127984221374e27b0472082b3768ecb59649c
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/445394
Reviewed-by: Manali Bhutiyani <manalib@google.com>
Commit-Queue: Vikram Auradkar <auradkar@google.com>
diff --git a/src/storage/bundles/BUILD.gn b/src/storage/bundles/BUILD.gn
index d88eb3b..3158abcc 100644
--- a/src/storage/bundles/BUILD.gn
+++ b/src/storage/bundles/BUILD.gn
@@ -18,6 +18,7 @@
     "//src/storage/bin/df",
     "//src/storage/bin/disk-pave:install-disk-image",
     "//src/storage/bin/mount",
+    "//src/storage/bin/storage-metrics",
     "//src/storage/bin/umount",
     "//zircon/third_party/uapp/fsck-msdosfs",
     "//zircon/third_party/uapp/mkfs-msdosfs",