treewide: switch to gomod and bump everything

This switches version resolution from fietsje to gomod and updates
all Go dependencies. It also bumps rules_go (required by gVisor) and
switches the Gazelle naming convention from go_default_xxx to the
standard Bazel convention of the default target having the package
name.

Since Kubernetes dropped upstream Bazel support and doesn't check in
all generated files I manually pregenerated the OpenAPI spec. This
should be fixed, but because of the already-huge scope of this CL
and the rebase complexity this is not in here.

Change-Id: Iec8ea613d06946882426c2f9fad5bda7e8aaf833
Reviewed-on: https://review.monogon.dev/c/monogon/+/639
Reviewed-by: Sergiusz Bazanski <serge@monogon.tech>
Reviewed-by: Leopold Schabel <leo@nexantic.com>
diff --git a/metropolis/node/core/cluster/BUILD.bazel b/metropolis/node/core/cluster/BUILD.bazel
index 93cc5de..78078bb 100644
--- a/metropolis/node/core/cluster/BUILD.bazel
+++ b/metropolis/node/core/cluster/BUILD.bazel
@@ -1,7 +1,7 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_library")
 
 go_library(
-    name = "go_default_library",
+    name = "cluster",
     srcs = [
         "cluster.go",
         "cluster_bootstrap.go",
@@ -11,20 +11,20 @@
     importpath = "source.monogon.dev/metropolis/node/core/cluster",
     visibility = ["//metropolis/node/core:__subpackages__"],
     deps = [
-        "//metropolis/node:go_default_library",
-        "//metropolis/node/core/consensus:go_default_library",
-        "//metropolis/node/core/curator/proto/api:go_default_library",
-        "//metropolis/node/core/identity:go_default_library",
-        "//metropolis/node/core/localstorage:go_default_library",
-        "//metropolis/node/core/network:go_default_library",
-        "//metropolis/node/core/roleserve:go_default_library",
-        "//metropolis/node/core/rpc:go_default_library",
-        "//metropolis/pkg/event/memory:go_default_library",
-        "//metropolis/pkg/supervisor:go_default_library",
-        "//metropolis/proto/api:go_default_library",
-        "//metropolis/proto/private:go_default_library",
-        "@com_github_cenkalti_backoff_v4//:go_default_library",
+        "//metropolis/node",
+        "//metropolis/node/core/consensus",
+        "//metropolis/node/core/curator/proto/api",
+        "//metropolis/node/core/identity",
+        "//metropolis/node/core/localstorage",
+        "//metropolis/node/core/network",
+        "//metropolis/node/core/roleserve",
+        "//metropolis/node/core/rpc",
+        "//metropolis/pkg/event/memory",
+        "//metropolis/pkg/supervisor",
+        "//metropolis/proto/api",
+        "//metropolis/proto/private",
+        "@com_github_cenkalti_backoff_v4//:backoff",
         "@org_golang_google_grpc//:go_default_library",
-        "@org_golang_google_protobuf//proto:go_default_library",
+        "@org_golang_google_protobuf//proto",
     ],
 )