New test for checking systemd in WSL

WSL now supports systemd, so there's need to check that we can enable and test it

schedule/wsl/wsl_main.yaml

@@ -1,11 +1,18 @@
 ---
-name:         wsl_main.yaml
+name: wsl_main.yaml
 description:  >
       WSL smoke test on Windows 10 image
 
+conditional_schedule:
+  enable_systemd:
+    WSL_SYSTEMD:
+      '1':
+        - wsl/enable_systemd
+
 schedule:
   - wsl/boot_windows
   - wsl/prepare_wsl
   - wsl/install_wsl
   - wsl/firstrun
+  - '{{enable_systemd}}'
   - wsl/wsl_cmd_check

tests/wsl/enable_systemd.pm

@@ -0,0 +1,43 @@
+# SUSE's openQA tests
+#
+# Copyright 2012-2023 SUSE LLC
+# SPDX-License-Identifier: FSFAP
+
+# Summary: Configure WSL users
+# Maintainer: qa-c  <[email protected]>
+
+use Mojo::Base qw(windowsbasetest);
+use testapi;
+use utils qw(enter_cmd_slow);
+use version_utils qw(is_opensuse);
+use wsl qw(is_fake_scc_url_needed);
+
+sub run {
+    my $self = shift;
+
+    assert_screen(['windows_desktop', 'powershell-as-admin-window']);
+    $self->open_powershell_as_admin if match_has_tag('windows_desktop');
+    # In openSUSE the WSL shell is not root, so there's need to run become_root
+    # in order to write in the /etc/wsl.conf file
+    $self->run_in_powershell(
+        cmd => q(wsl),
+        code => sub {
+            become_root if (is_opensuse);
+            enter_cmd("ps 1 | grep '/init'");
+            enter_cmd("stat /init | grep 'init'");
+            enter_cmd("echo -e '[boot]\nsystemd=true' > /etc/wsl.conf");
+            save_screenshot;
+            enter_cmd("exit");
+            # In openSUSE there's need to exit twice, one from the root and another
+            # one from the WSL
+            enter_cmd("exit") if (is_opensuse);
+        }
+    );
+    $self->run_in_powershell(cmd => q(wsl --shutdown));
+    $self->run_in_powershell(cmd => q(wsl /bin/bash -c "ps 1 | grep '/sbin/init'"));
+    $self->run_in_powershell(cmd => q(wsl /bin/bash -c "stat /sbin/init | grep 'systemd'"));
+    $self->run_in_powershell(cmd => q(wsl /bin/bash -c "systemctl list-unit-files --type=service | head -n 20"));
+    $self->run_in_powershell(cmd => q(wsl /bin/bash -c "exit"));
+}
+
+1;