refactor pkg_deb

CODEOWNERS

@@ -1,4 +1,11 @@
 * @aiuto @nacl
 
-/deb_packages/  @MarkusTeufelberger @adragomir
-/pkg/rpm/ @nacl
+/deb_packages/  @aiuto
+/docs		@aiuto @nacl @floriographygoth
+
+/pkg/rpm/	@nacl
+/pkg/tests/rpm/	@nacl
+legacy/tests/rpm	@nacl
+
+/pkg/private/make_deb.py	@aiuto @dannysullivan
+/pkg/tests/deb/			@aiuto @dannysullivan

distro/BUILD

@@ -39,6 +39,7 @@ pkg_tar(
         "//:standard_package",
         "//pkg:standard_package",
         "//pkg/private:standard_package",
+        "//pkg/private/deb:standard_package",
         "//pkg/releasing:standard_package",
         "//toolchains:standard_package",
         "//toolchains/git:standard_package",
@@ -116,6 +117,7 @@ bzl_library(
         "//pkg:rpm.bzl",
         "//pkg/private:pkg_files.bzl",
         "//pkg/private:util.bzl",
+        "//pkg/private/deb:deb.bzl",
         "@bazel_skylib//lib:paths",
     ],
     visibility = ["//visibility:private"],

distro/testdata/BUILD.tpl

@@ -1,4 +1,4 @@
-load("@not_named_rules_pkg//:pkg.bzl", "pkg_tar")
+load("@not_named_rules_pkg//pkg:pkg.bzl", "pkg_tar")
 
 pkg_tar(
     name = "dummy_tar",

pkg/README.md

@@ -40,8 +40,8 @@ find_system_rpmbuild(name = "rules_pkg_rpmbuild")
 This example is a simplification of the debian packaging of Bazel:
 
 ```python
-load("@rules_pkg//pkg:pkg.bzl", "pkg_tar", "pkg_deb")
-
+load("@rules_pkg//pkg:pkg.bzl", "pkg_tar")
+load("@rules_pkg//pkg:deb.bzl", "pkg_deb")
 
 pkg_tar(
     name = "bazel-bin",

pkg/deb.bzl

@@ -0,0 +1,16 @@
+# Copyright 2021 The Bazel Authors. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+load("//pkg/private/deb:deb.bzl", _pkg_deb = "pkg_deb")
+
+pkg_deb = _pkg_deb