Minor bugfix to remove un-neceessary fact collection

Removed fact collection from hooks as it is an un-necessary action.

Change-Id: Ic40d1b85bf19717a92d1db24109f049f3fca0a7f

playbooks/step_post_hook.yml

@@ -15,6 +15,7 @@
 ---
 - name: "Execute LOCAL command on this node"
   hosts: localhost
+  gather_facts: no
   sudo: yes
   max_fail_percentage: 0
   tasks:

playbooks/step_pre_hook.yml

@@ -16,6 +16,7 @@
 - name: "Execute LOCAL command on this node"
   hosts: localhost
   sudo: yes
+  gather_facts: no
   max_fail_percentage: 0
   tasks:
     - name: "Execute Locally defined command"