Upgade rule_pkg by 1 version and work around rpmbuild bug

There's a bug in some earlier rpmbuild versions that needs to be
given a default value for _smp_build_cpus. Hence the "defines" parameter
and hence the upgrade by 1 version and hence the update to the patch.

WORKSPACE

@@ -122,13 +122,12 @@ install_python_doc_deps()
 
 http_archive(
     name = "rules_pkg",
-    sha256 = "8f9ee2dc10c1ae514ee599a8b42ed99fa262b757058f65ad3c384289ff70c4b8",
-    patch_args = ["-p1"],
-    patches = ["@//dist:rpm/rpm_rules.patch"],
     urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/rules_pkg/releases/download/0.9.1/rules_pkg-0.9.1.tar.gz",
-        "https://github.com/bazelbuild/rules_pkg/releases/download/0.9.1/rules_pkg-0.9.1.tar.gz",
+        "https://github.com/bazelbuild/rules_pkg/releases/download/0.10.1/rules_pkg-0.10.1.tar.gz",
     ],
+    sha256 = "d250924a2ecc5176808fc4c25d5cf5e9e79e6346d79d5ab1c493e289e722d1d0",
+    patch_args = ["-p1"],
+    patches = ["@//dist:rpm/rpm_rules.patch"],
 )
 
 load("@rules_pkg//:deps.bzl", "rules_pkg_dependencies")

dist/package.bzl

@@ -132,6 +132,7 @@ def scion_pkg_rpm(name, package, executables = {}, systemds = [], configs = [],
         package_name = package,
         release = "%autorelease",
         version_file = ":%s_version" % name,
+        defines = {"_smp_build_ncpus" : "1" }, 
         requires = deps,
         post_scriptlet_file = post,
         **kwargs

dist/rpm/rpm_rules.patch

@@ -66,15 +66,6 @@ diff --git a/pkg/rpm_pfg.bzl b/pkg/rpm_pfg.bzl
 index 1e3450c1..596dc26d 100644
 --- a/pkg/rpm_pfg.bzl
 +++ b/pkg/rpm_pfg.bzl
-@@ -142,7 +142,7 @@ def _make_absolute_if_not_already_or_is_macro(path):
-     # this can be inlined easily.
-     return path if path.startswith(("/", "%")) else "/" + path
-
--#### Input processing helper functons.
-+#### Input processing helper functions.
-
- # TODO(nacl, #459): These are redundant with functions and structures in
- # pkg/private/pkg_files.bzl.  We should really use the infrastructure provided
 @@ -251,7 +251,7 @@ def _pkg_rpm_impl(ctx):
              rpm_name,
              ctx.attr.version,
@@ -83,26 +74,16 @@ index 1e3450c1..596dc26d 100644
 +            ctx.attr.architecture if ctx.attr.architecture else ctx.attr.target_architecture,
          )
 
-     outputs, output_file, output_name = setup_output_files(
-@@ -432,6 +432,9 @@ def _pkg_rpm_impl(ctx):
+     _, output_file, _ = setup_output_files(
+@@ -454,5 +454,8 @@ def _pkg_rpm_impl(ctx):
 
      args.append("--out_file=" + output_file.path)
 
 +    if ctx.attr.target_architecture:
 +        args.append("--target_arch=" + ctx.attr.target_architecture)
 +
-     # Add data files.
-     if ctx.file.changelog:
-         files.append(ctx.file.changelog)
-@@ -666,7 +669,7 @@ def _pkg_rpm_impl(ctx):
-     output_groups = {
-         "out": [default_file],
-         "rpm": [output_file],
--        "changes": changes
-+        "changes": changes,
-     }
-     return [
-         OutputGroupInfo(**output_groups),
+     # Add data files
+     files += ctx.files.srcs
 @@ -791,20 +794,29 @@ pkg_rpm = rule(
          # funny if it's not provided.  The contents of the RPM are believed to
          # be set as expected, though.