treewide: port everything to blockdev

This gets rid of most ad-hoc block device code, using blockdev for
everything. It also gets rid of diskfs for everything but tests. This
enables Metropolis to be installed on non-512-byte block sizes.

Change-Id: I644b5b68bb7bed8106585df3179674789031687a
Reviewed-on: https://review.monogon.dev/c/monogon/+/1873
Tested-by: Jenkins CI
Reviewed-by: Serge Bazanski <serge@monogon.tech>
diff --git a/metropolis/cli/metroctl/BUILD.bazel b/metropolis/cli/metroctl/BUILD.bazel
index f013c42..111c6e6 100644
--- a/metropolis/cli/metroctl/BUILD.bazel
+++ b/metropolis/cli/metroctl/BUILD.bazel
@@ -46,6 +46,8 @@
         "//metropolis/cli/pkg/datafile",
         "//metropolis/node/core/identity",
         "//metropolis/node/core/rpc",
+        "//metropolis/pkg/blkio",
+        "//metropolis/pkg/fat32",
         "//metropolis/pkg/logtree",
         "//metropolis/proto/api",
         "//metropolis/proto/common",