Removing unneeded with_items usage for clarity

Change-Id: I03846809dd3dd600a2ee2ae8c5fde46e83f1da00

tasks/nova_pre_install.yml

@@ -99,13 +99,11 @@
 
 - name: Create nova log dir
   file:
-    path: "{{ item.path }}"
+    path: "/var/log/nova"
     state: directory
-    owner: "{{ item.owner|default(nova_system_user_name) }}"
-    group: "{{ item.group|default(nova_system_group_name) }}"
-    mode: "{{ item.mode|default('0755') }}"
-  with_items:
-    - { path: "/var/log/nova" }
+    owner: "{{ nova_system_user_name }}"
+    group: "{{ nova_system_group_name }}"
+    mode: "0755"
   when: log_dir.rc != 0
   tags:
     - nova-dirs