cleanup: removed centos code, cleaned up debian & ubuntu references

README.md

@@ -4,5 +4,3 @@
 
 This role will update the package cache on the target host.
 
-This role should work on both Ubuntu and CentOS based hosts.
-

tasks/main.yml

@@ -3,8 +3,6 @@
 #
 # This role will update the package cache on the target host.
 #
-# This role should work on both Ubuntu and CentOS based hosts.
-#
 ###########################################################################
 #
 # NOTE:
@@ -12,22 +10,18 @@
 # done by doing a 'gather_facts' action);
 #
 # {{ ansible_distribution }}
+# {{ ansible_os_family }}
 #
 ###########################################################################
 # tasks file for update_cache
 
 - debug: msg="Updating package cache"
 
-- name: updated package cache (Ubuntu)
+- name: updated package cache (Debian based repos)
   apt:
     update-cache: true
   when: ansible_os_family == "Debian"
 
-- name: update package cache (CentOS)
-  yum:
-    update_cache: true
-  when: ansible_distribution == "CentOS"
-
 - name: update package cache (Alpine)
   apk:
     update_cache: true