---
- name: set kernel command line options
  lineinfile:
    path: /etc/default/grub
    regexp: '^#?GRUB_CMDLINE_LINUX='
    line: 'GRUB_CMDLINE_LINUX="{% for opt,val in (install.kernel_cmdline | default({})).items() %}{{ opt }}={{ val }}{% if not loop.last %} {% endif %}{% endfor %}"'
  when: install is defined and install.kernel_cmdline is defined