Install all available kernels by default (#581)

Anaconda/pungi doesn't support multiple versions of the same package at
the time, so place all kernels on installation media in separate
directory and install them in %post script.

anaconda/data/post-scripts/40-qubes-alt-kernels.ks

@@ -0,0 +1,8 @@
+%post --nochroot
+
+for pkg in /run/install/repo/extrakernels/*.rpm; do
+  name=`basename $pkg .rpm`
+  rpm --root=$ANA_INSTALL_PATH -q $name > /dev/null || rpm --root=$ANA_INSTALL_PATH -i --oldpackage $pkg
+done
+
+%end

anaconda/data/post-scripts/Makefile.am

@@ -18,5 +18,5 @@
 # Author: Chris Lumens <clumens@redhat.com>
 
 postscriptsdir = $(datadir)/$(PACKAGE_NAME)/post-scripts
-dist_postscripts_DATA = 50-qubes.ks 80-setfilecons.ks 90-copy-screenshots.ks 99-copy-logs.ks
+dist_postscripts_DATA = 40-qubes-alt-kernels.ks 50-qubes.ks 80-setfilecons.ks 90-copy-screenshots.ks 99-copy-logs.ks
 MAINTAINERCLEAFILES = Makefile.in

lorax-templates-qubes/templates/config_files/x86/isolinux.cfg

@@ -78,6 +78,7 @@ label vesa
   endtext
   kernel mboot.c32
   append xen.gz --- vmlinuz @ROOT@ xdriver=vesa nomodeset quiet --- initrd.img
+@EXTRAKERNELS@
 label rescue
   menu indent count 5
   menu label ^Rescue a @PRODUCT@ system
@@ -100,7 +101,6 @@ label local
   menu label Boot from ^local drive
   localboot 0xffff
 menu separator # insert an empty line
-menu separator # insert an empty line
 label returntomain
   menu label Return to ^main menu
   menu exit

lorax-templates-qubes/templates/x86.tmpl

@@ -6,6 +6,7 @@ PXEBOOTDIR="images/pxeboot"
 BOOTDIR="isolinux"
 KERNELDIR=PXEBOOTDIR
 LIVEDIR="LiveOS"
+EXTRAKERNELS="extrakernels"
 %>
 
 mkdir ${LIVEDIR}
@@ -24,6 +25,10 @@ install ${configdir}/grub.conf ${BOOTDIR}
 install usr/share/anaconda/boot/syslinux-splash.png ${BOOTDIR}/splash.png
 install boot/memtest* ${BOOTDIR}/memtest
 
+mkdir ${EXTRAKERNELS}
+# bypass "chroot" enforced by Lorax parser
+install ../../../../yum/qubes-dom0/rpm/kernel-[0-9]*rpm ${EXTRAKERNELS}
+
 ## install kernels
 mkdir ${KERNELDIR}
 %for kernel in kernels: