installer: workaround missing --downloaddir option for dnf install

dnf5 doesn't support --downloaddir (nor --destdir) for the install
action yet. Previous attempt of the fix was using download action, but
that on the other hand doesn't support groups. This time fix this by
extracting packages from dnf cache manually. Use find to not rely on
specific directory layout (which is not guaranteed to stay unchanged).

But for the case where download action can be used (templates), adjust
options order for dnf5.

qubesbuilder/plugins/installer/Makefile

@@ -128,14 +128,18 @@ iso-parse-tmpl:
 
 iso-packages-anaconda:
 	$(DNF) $(DNF_OPTS) clean all
+	find $(DNF_ROOT) -name "*.rpm" -delete
 	# workaround for https://github.com/rpm-software-management/dnf/issues/1974
 	rpmkeys --root=$(DNF_ROOT) --import $$(sed -n '/gpgkey *= *file:/{s,.*file://,,;p}' $(DNF_ROOT)/etc/yum.repos.d/*.repo)
-	umask 022; $(DNF) $(DNF_OPTS) --downloaddir=$(BASE_DIR)/os/Packages --downloadonly install $(shell cat $(DNF_PACKAGES))
+	umask 022; $(DNF) $(DNF_OPTS) --downloadonly install $(shell cat $(DNF_PACKAGES))
+	find $(DNF_ROOT) -name "*.rpm" -exec mv -t $(BASE_DIR)/os/Packages {} +
 	pushd $(BASE_DIR)/os/ && $(CREATEREPO) -q -g $(TMP_DIR)/comps.xml .
 
 iso-packages-lorax:
 	$(DNF) $(DNF_OPTS) clean all
-	umask 022; $(DNF) $(DNF_OPTS) --downloaddir=$(INSTALLER_DIR)/yum/installer/rpm --downloadonly install $(shell cat $(LORAX_PACKAGES))
+	find $(DNF_ROOT) -name "*.rpm" -delete
+	umask 022; $(DNF) $(DNF_OPTS) --downloadonly install $(shell cat $(LORAX_PACKAGES))
+	find $(DNF_ROOT) -name "*.rpm" -exec mv -t $(INSTALLER_DIR)/yum/installer/rpm {} +
 	pushd $(INSTALLER_DIR)/yum/installer && $(CREATEREPO) -q -g $(TMP_DIR)/comps.xml --update .
 
 iso-templates-cache: iso-prepare iso-parse-kickstart
@@ -149,7 +153,7 @@ iso-templates-cache: iso-prepare iso-parse-kickstart
 
 	$(DNF) $(DNF_OPTS) clean all
 	rpmkeys --root=$(DNF_ROOT) --import $$(sed -n '/gpgkey *= *file:/{s,.*file://,,;p}' $(DNF_ROOT)/etc/yum.repos.d/*.repo)
-	umask 022; $(DNF) $(DNF_OPTS_TEMPLATES) --downloaddir=$(INSTALLER_DIR)/yum/installer/rpm --downloaddir=$(BUILDER_DIR)/repository/templates download $(TEMPLATE_PACKAGES)
+	umask 022; $(DNF) $(DNF_OPTS_TEMPLATES) download --destdir=$(BUILDER_DIR)/repository/templates $(TEMPLATE_PACKAGES)
 
 #
 # CAGE -> MOCK