playbook: don't repository update cache all the time

playbook/roles/ntp/tasks/main.yml

 ---
   - name: Install ntp
-    apt: name=ntp state=latest
+    apt: name=ntp state=latest update_cache=no 
     when: ansible_os_family == "Debian"
 
   - name: Install ntp
-    yum: name=ntp state=latest
+    yum: name=ntp state=latest update_cache=no  
     when: ansible_os_family == "RedHat"
 
   - name: ensure ntp is runing

playbook/roles/vm-cloudera-manager/tasks/main.yml

@@ -19,10 +19,10 @@
     raw: "apt-get install -y python-apt"
 
   - name: install sudo
-    apt: name=sudo state=latest
+    apt: name=sudo state=latest update_cache=no
 
   - name: install tree
-    apt: name=tree state=latest
+    apt: name=tree state=latest  update_cache=no
 
   - name: install curl
     apt: name=curl state=latest