Don't reload sysctl each time

If we're setting the sysctl value with `sysctl_set` and writing it
to the conf file with `state`, there's no need to force a reload of
the sysctl.conf file. By the time each item in the loop finishes,
the sysctl value is set in the running system and in the conf file
already.

This should speed up the task.

Change-Id: Id5b4f0629f0c00c58469b03e0760891923e43fbe

tasks/openstack_kernel_tuning.yml

@@ -19,6 +19,6 @@
     value: "{{ item.value }}"
     sysctl_set: "{{ item.set|default('yes') }}"
     state: "{{ item.state|default('present') }}"
-    reload: "{{ item.reload|default('yes') }}"
+    reload: no
   with_items: "{{ openstack_kernel_options + openstack_user_kernel_options }}"
   failed_when: false