Adds debian support to iso element

Adds support for debian to iso.
Updated README to further clarify what the element does.

Change-Id: I17ac89cfbc84365860c591fab0e4c78123035983
Co-Authored-By: zhangjian <jian.zhang8@hpe.com>

elements/iso/README.rst

@@ -2,12 +2,13 @@
 iso
 ===
 Generates a bootable ISO image from the kernel/ramdisk generated by the
-elements ``baremetal`` or ``ramdisk``. It uses isolinux to boot on BIOS
+elements ``baremetal``, ``ironic-agent`` or ``ramdisk``. It uses isolinux to boot on BIOS
 machines and grub to boot on EFI machines.
 
 This element has been tested on the following distro(s):
 * ubuntu
 * fedora
+* debian
 
 **NOTE**: For other distros, please make sure the ``isolinux.bin`` file
 exists at ``/usr/lib/syslinux/isolinux.bin``.
@@ -36,6 +37,10 @@ named ``<image-name>.iso`` booting the generated kernel and ramdisk. It also
 automatically appends kernel command-line argument 'boot\_method=vmedia'
 which is required for Ironic drivers ``iscsi_ilo``.
 
+ironic-agent element
+--------------------
+When used with ``ironic-agent`` element, this generates a bootable ISO image named ``<image-name>.iso`` which boots the agent kernel and agent ramdisk.
+
 **REFERENCES**
 
 [1] https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1378658

elements/iso/cleanup.d/100-build-iso

@@ -63,6 +63,11 @@ function build_iso() {
     if [ $DISTRO_NAME = "fedora" ]; then
         EFI_BOOT_DIR="EFI/fedora"
         EXTRA_KERNEL_PARAMS="usbcore.autosuspend=-1"
+    #debian
+    elif [ $DISTRO_NAME = "debian" ]; then
+        EFI_BOOT_DIR="EFI/debian"
+        EXTRA_KERNEL_PARAMS=""
+    #ubuntu:
     else
         EFI_BOOT_DIR="EFI/ubuntu"
         EXTRA_KERNEL_PARAMS=""

elements/iso/package-installs.yaml

@@ -1 +1,3 @@
 syslinux:
+syslinux-common:
+isolinux:

elements/iso/pkg-map

@@ -1,14 +1,27 @@
 {
+  "distro":{
+    "debian":{
+        "syslinux": "syslinux",
+        "syslinux-common": "syslinux-common",
+        "isolinux": "isolinux"
+    }
+  },
   "family":{
     "debian":{
-      "syslinux": "syslinux"
+      "syslinux": "syslinux",
+      "syslinux-common": "",
+      "isolinux": ""
     },
     "redhat":{
-      "syslinux": ""
+      "syslinux": "",
+      "syslinux-common": "",
+      "isolinux": ""
     }
   },
   "default":{
-      "syslinux": "syslinux"
+      "syslinux": "syslinux",
+      "syslinux-common": "",
+      "isolinux": ""
   }
 }
 

elements/iso/post-install.d/01-copy-bootloaders

@@ -22,9 +22,15 @@ else
     SHIM_FILE="/usr/lib/shim/shim.efi.signed"
 fi
 
+#fedora
 if [ $DISTRO_NAME = "fedora" ]; then
     SYSLINUX_FILE="/usr/share/syslinux/isolinux.bin"
     LDLINUX_FILE="/usr/share/syslinux/ldlinux.c32"
+#debian
+elif [ $DISTRO_NAME = "debian" ]; then
+    SYSLINUX_FILE="/usr/lib/ISOLINUX/isolinux.bin"
+    LDLINUX_FILE="/usr/lib/syslinux/modules/bios/ldlinux.c32"
+#ubuntu
 else
     SYSLINUX_FILE="/usr/lib/syslinux/isolinux.bin"
     LDLINUX_FILE="/usr/lib/syslinux/ldlinux.c32"