lorax-templates-qubes: include additional VM kernels on the image

HVM suspend is broken in 4.14.13, on some machines. Lets ease using 4.9
for them.

lorax-templates-qubes/templates/x86.tmpl

@@ -35,6 +35,10 @@ 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-qubes-vm-[0-9]*rpm ${EXTRAKERNELS}
+
 ## install kernels
 mkdir ${KERNELDIR}
 <%