Drop support for /etc/modules

We no longer support any OS distros that use /etc/modules.

Change-Id: Ic41cad64ed0479a0cef7321aeed191fe06a30e8f

ansible/roles/module-load/tasks/main.yml

@@ -5,11 +5,6 @@
   when:
     - kolla_action != "config"
   block:
-    - name: Check whether /etc/modules-load.d exists
-      stat:
-        path: /etc/modules-load.d
-      register: modules_load_stat
-
     - name: Load modules
       become: true
       modprobe:
@@ -29,7 +24,6 @@
       loop_control:
         label: "{{ item.name }}"
       when:
-        - modules_load_stat.stat.exists
         - (item.state | default('present')) == 'present'
 
     - name: Drop module persistence
@@ -41,16 +35,4 @@
       loop_control:
         label: "{{ item.name }}"
       when:
-        - modules_load_stat.stat.exists
         - (item.state | default('present')) == 'absent'
-
-    - name: Persist modules via /etc/modules
-      become: true
-      lineinfile:
-        dest: /etc/modules
-        line: "{{ item.name }} {{ item.params | default('') }}"
-        state: "{{ item.state | default('present') }}"
-      loop: "{{ modules }}"
-      loop_control:
-        label: "{{ item.name }}"
-      when: not modules_load_stat.stat.exists