go: re-do the entire thing

This is a mega-change, but attempting to split this up further is
probably not worth the effort.

Summary:

1. Bump up bazel, rules_go, and others.
2. Switch to new go target naming (bye bye go_default_library)
3. Move go deps to go.mod/go.sum, use make gazelle generate from that
4. Bump up Python deps a bit

And also whatever was required to actually get things to work - loads of
small useless changes.

Tested to work on NixOS and Ubuntu 20.04:

   $ bazel build //...
   $ bazel test //...

Change-Id: I8364bdaa1406b9ae4d0385a6b607f3e7989f98a9
Reviewed-on: https://gerrit.hackerspace.pl/c/hscloud/+/1583
Reviewed-by: q3k <q3k@hackerspace.pl>
diff --git a/hswaw/capacifier/BUILD.bazel b/hswaw/capacifier/BUILD.bazel
index 752064d..45d56f9 100644
--- a/hswaw/capacifier/BUILD.bazel
+++ b/hswaw/capacifier/BUILD.bazel
@@ -2,20 +2,20 @@
 load("@io_bazel_rules_docker//container:container.bzl", "container_image", "container_layer", "container_push")
 
 go_library(
-    name = "go_default_library",
+    name = "capacifier_lib",
     srcs = ["capacifier.go"],
     importpath = "code.hackerspace.pl/hscloud/hswaw/capacifier",
     visibility = ["//visibility:private"],
     deps = [
-        "//go/mirko:go_default_library",
-        "@com_github_golang_glog//:go_default_library",
-        "@in_gopkg_ldap_v3//:go_default_library",
+        "//go/mirko",
+        "@com_github_go_ldap_ldap_v3//:ldap",
+        "@com_github_golang_glog//:glog",
     ],
 )
 
 go_binary(
     name = "capacifier",
-    embed = [":go_default_library"],
+    embed = [":capacifier_lib"],
     visibility = ["//visibility:public"],
 )