Use Ubuntu 22.04 for new VMs

Also, remove the custom config image generation and replace it with
`--cloud-init` options.

site-cookbooks/kosmos_kvm/templates/create_vm.erb

@@ -17,7 +17,7 @@ DISKSIZE=${4:-10} # 10GB default
 # Directory where image files will be stored
 IMAGE_DIR=/var/lib/libvirt/images
 IMAGE_PATH=$IMAGE_DIR/${VMNAME}.qcow2
-CIDATA_PATH=${IMAGE_DIR}/cidata-${VMNAME}.iso
+CIDATA_PATH=${IMAGE_DIR}/${VMNAME}-cloudinit
 BASE_FILE=<%= @base_image_path %>
 
 # Create the VM image if it does not already exist
@@ -38,9 +38,8 @@ qemu-img info "$IMAGE_PATH"
 # Check if the cloud-init metadata file exists
 # if not, generate it
 if [ ! -r $CIDATA_PATH ]; then
-  pushd $(dirname $CIDATA_PATH)
-  mkdir -p $VMNAME
-  cd $VMNAME
+  mkdir -p $CIDATA_PATH
+  pushd $CIDATA_PATH
 
   cat > user-data <<-EOS
 #cloud-config
@@ -62,25 +61,19 @@ instance-id: $VMNAME
 local-hostname: $VMNAME
 EOS
 
-  genisoimage -output "$CIDATA_PATH" -volid cidata -joliet -rock user-data meta-data
-  chown libvirt-qemu:kvm "$CIDATA_PATH"
-  chmod 600 "$CIDATA_PATH"
   popd
 fi
 
-# setting --os-variant to ubuntu20.04 and ubuntu18.04 breaks SSH and networking
 virt-install \
   --name "$VMNAME" \
   --ram "$RAM" \
   --vcpus "$CPUS" \
   --cpu host \
   --arch x86_64 \
-  --os-type linux \
-  --os-variant ubuntu16.04 \
+  --osinfo detect=on,name=ubuntujammy \
   --hvm \
   --virt-type kvm \
   --disk "$IMAGE_PATH" \
-  --cdrom "$CIDATA_PATH" \
   --boot hd \
   --network=bridge=virbr0,model=virtio \
   --graphics none \
@@ -88,4 +81,5 @@ virt-install \
   --console pty \
   --channel unix,mode=bind,path=/var/lib/libvirt/qemu/$VMNAME.guest_agent.0,target_type=virtio,name=org.qemu.guest_agent.0 \
   --autostart \
-  --import
+  --import \
+  --cloud-init root-password-generate=off,disable=on,meta-data=$CIDATA_PATH/meta-data,user-data=$CIDATA_PATH/user-data