Adjust primary bifrost settings for Debian jessie support

Specific settings are required for Debian jessie as it uses
different defaults from wheezy.

Additionally, we're going to attempt to ensure that the service
folder exists if we're using a systemd template upon install
as sometimes that folder may not be present on systems.

Added genisoimage as a fallback to mkisofs in configuration
drive generation.

Change-Id: I74bf93416513094293bc071fd40e62f4240d61bc
Closes-Bug: 1522552

playbooks/roles/bifrost-configdrives-dynamic/defaults/main.yml

@@ -21,3 +21,6 @@ network_mtu: 1500
 
 # Default URL to Ironic
 ironic_url: "http://localhost:6385/"
+
+# Default ISO generation utility
+iso_gen_utility: "mkisofs"

playbooks/roles/bifrost-configdrives-dynamic/tasks/main.yml

@@ -62,9 +62,17 @@
 - name: "Write network Debian style interface template"
   local_action: template src=interfaces.j2 dest={{ variable_configdrive_location.stdout }}/{{ uuid }}/openstack/content/0000
   when: write_interfaces_file | bool
+- name: "Check if mkisofs is available"
+  shell: mkisofs --help >>/dev/null
+  ignore_errors: yes
+  register: test_mkisofs
+- name: "If mkisofs is not available, fallback to genisoimage"
+  set_fact:
+    iso_gen_utility: "genisoimage"
+  when: test_mkisofs.rc != 0
 - name: "Make config drive files"
   become: yes
-  command: mkisofs -R -V config-2 -o {{http_boot_folder}}/configdrive-{{ uuid }}.iso {{ variable_configdrive_location.stdout }}/{{ uuid }}
+  command: "{{iso_gen_utility}} -R -V config-2 -o {{http_boot_folder}}/configdrive-{{ uuid }}.iso {{ variable_configdrive_location.stdout }}/{{ uuid }}"
 - name: "Make config drive files base64 encoded and gzip compressed"
   become:  yes
   shell: gzip -c {{http_boot_folder}}/configdrive-{{ uuid }}.iso | base64 > {{http_boot_folder}}/configdrive-{{ uuid }}.iso.gz

playbooks/roles/bifrost-ironic-install/defaults/required_defaults_Debian_jessie.yml

@@ -0,0 +1,47 @@
+---
+init_template: systemd_template.j2
+init_dest_dir: /usr/lib/systemd/system/
+init_ext: .service
+syslinux_tftp_dir: /usr/lib/PXELINUX/
+ipxe_dir: /usr/lib/ipxe/
+ipxe_full_binary: ipxe.pxe
+sgabios_dir: /usr/share/qemu/
+nginx_user: www-data
+virt_group: libvirt
+mysql_service_name: mysql
+required_packages:
+  - mysql-server
+  - rabbitmq-server
+  - python-dev
+  - python-mysqldb
+  - python-configparser
+  - libffi-dev
+  - libxslt1-dev
+  - libssl-dev
+  - libxml2-dev
+  - ipxe
+  - tftpd-hpa
+  - tftp-hpa
+  - syslinux-common
+  - syslinux
+  - pxelinux
+  - xinetd
+  - parted
+  - ipmitool
+  - psmisc
+  - nginx
+  - wget
+  - genisoimage
+  - kpartx
+  - qemu-utils
+  - amtterm
+  - sgabios
+  - libvirt-bin
+  - debootstrap
+  - uuid-runtime
+  - dnsmasq
+# NOTE(TheJulia): The above entry for dnsmasq must be the last entry in the
+# package list as the installation causes name resolution changes that can
+# temporarily block packages following it while the system is being
+# reconfigured. See: https://review.openstack.org/#/c/223813
+

playbooks/roles/bifrost-ironic-install/tasks/main.yml

@@ -29,6 +29,7 @@
 - name: Include OS version-specific defaults
   include_vars: "{{ item }}"
   with_first_found:
+    - "../defaults/required_defaults_{{ ansible_distribution }}_{{ansible_distribution_release }}.yml"
     - "../defaults/required_defaults_{{ ansible_distribution }}_{{ ansible_distribution_version }}.yml"
     - "../defaults/dummy-defaults.yml"
 - name: "Update Package Cache"
@@ -136,6 +137,12 @@
 - name: "Create authorized_keys file for ironic user"
   command: cp -p /home/ironic/.ssh/id_rsa.pub /home/ironic/.ssh/authorized_keys
   when: testing == true
+- name: "Create service folder if systemd template is defined"
+  file:
+    path: "{{ init_dest_dir }}"
+    state: directory
+    mode: 0755
+  when: init_template == 'systemd_template.j2'
 - name: "Install ironic-inspector to permit use of inspection interface"
   include: inspector_install.yml
   when: enable_inspector | bool