Removed memcached log directory task

The memcached play has a log directory task that will cause an issue
with permissions with a container where memcached is installed. To
solve this issue the log directory permissions change task needs to
be removed

Change-Id: I7daa76e601a1bf430765866c1e4c0b8f9638aa73
Closes-Bug: 1459039

playbooks/roles/memcached_server/tasks/memcached_pre_install.yml

@@ -22,14 +22,3 @@
     createhome: "no"
   tags:
     - memcached-user
-
-- name: Ensure memcached directories
-  file:
-    path: "{{ item }}"
-    state: "directory"
-    owner: "root"
-    group: "root"
-  with_items:
-    - "{{ memcached_log | dirname }}"
-  tags:
-    - memcached-dirs