mkosi: Install debug packages when WITH_DEBUG=1 is enabled

When we're building debuginfo packages, the original binaries and
libraries are stripped so make sure we install the debuginfo
packages to make sure debugging in the container/VM still works.

mkosi.images/system/mkosi.conf.d/10-arch/mkosi.conf.d/10-debug.conf

@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+[Match]
+Environment=WITH_DEBUG=1
+
+[Content]
+VolatilePackages=systemd-debug

mkosi.images/system/mkosi.conf.d/10-centos-fedora/mkosi.conf.d/10-debug.conf

@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+[Match]
+Environment=WITH_DEBUG=1
+
+[Content]
+VolatilePackages=
+        systemd-container-debuginfo
+        systemd-debuginfo
+        systemd-debugsource
+        systemd-journal-remote-debuginfo
+        systemd-libs-debuginfo
+        systemd-networkd-debuginfo
+        systemd-pam-debuginfo
+        systemd-resolved-debuginfo
+        systemd-tests-debuginfo
+        systemd-udev-debuginfo

mkosi.images/system/mkosi.conf.d/10-debian-ubuntu/mkosi.conf.d/10-debug.conf

@@ -0,0 +1,27 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+[Match]
+Environment=WITH_DEBUG=1
+
+[Content]
+VolatilePackages=
+        libnss-myhostname-dbgsym
+        libnss-mymachines-dbgsym
+        libnss-resolve-dbgsym
+        libnss-systemd-dbgsym
+        libpam-systemd-dbgsym
+        libsystemd-shared-dbgsym
+        libsystemd0-dbgsym
+        libudev1-dbgsym
+        systemd-boot-dbgsym
+        systemd-container-dbgsym
+        systemd-coredump-dbgsym
+        systemd-dbgsym
+        systemd-homed-dbgsym
+        systemd-journal-remote-dbgsym
+        systemd-oomd-dbgsym
+        systemd-resolved-dbgsym
+        systemd-tests-dbgsym
+        systemd-timesyncd-dbgsym
+        systemd-userdbd-dbgsym
+        udev-dbgsym

mkosi.images/system/mkosi.conf.d/10-opensuse/mkosi.conf.d/10-debug.conf

@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+[Match]
+Environment=WITH_DEBUG=1
+
+[Content]
+VolatilePackages=
+        libsystemd0-debuginfo
+        libudev1-debuginfo
+        systemd-boot-debuginfo
+        systemd-container-debuginfo
+        systemd-coredump-debuginfo
+        systemd-debuginfo
+        systemd-debugsource
+        systemd-experimental-debuginfo
+        systemd-homed-debuginfo
+        systemd-journal-remote-debuginfo
+        systemd-network-debuginfo
+        systemd-portable-debuginfo
+        systemd-sysvcompat-debuginfo
+        systemd-testsuite-debuginfo
+        udev-debuginfo