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/test/launch/cli/launch-multi2/BUILD.bazel b/metropolis/test/launch/cli/launch-multi2/BUILD.bazel
index 932b57b..c53b626 100644
--- a/metropolis/test/launch/cli/launch-multi2/BUILD.bazel
+++ b/metropolis/test/launch/cli/launch-multi2/BUILD.bazel
@@ -1,13 +1,13 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
 
 go_library(
-    name = "go_default_library",
+    name = "launch-multi2_lib",
     srcs = ["main.go"],
     importpath = "source.monogon.dev/metropolis/test/launch/cli/launch-multi2",
     visibility = ["//visibility:private"],
     deps = [
-        "//metropolis/cli/pkg/context:go_default_library",
-        "//metropolis/test/launch/cluster:go_default_library",
+        "//metropolis/cli/pkg/context",
+        "//metropolis/test/launch/cluster",
     ],
 )
 
@@ -21,6 +21,6 @@
         "//third_party/edk2:firmware",
         "@com_github_bonzini_qboot//:qboot-bin",
     ],
-    embed = [":go_default_library"],
+    embed = [":launch-multi2_lib"],
     visibility = ["//:__pkg__"],
 )