Update all calls to sudo to use 'become' and sudo_user to 'become_user'

tasks/persistent_cloud.yml

@@ -22,7 +22,7 @@
   when: host_is_up|failed
 
 - name: spin UP VM using nova_compute
-  sudo: False
+  become: False
   local_action:
       module: nova_compute
       auth_url: "{{os_auth_url}}"

tasks/transient_cloud.yml

@@ -1,7 +1,7 @@
 # New tasks to spin up instance in https://fedorainfracloud.org
 
 - name: spin UP VM using nova_compute
-  sudo: False
+  become: False
   local_action:
       security_groups: all-icmp-transient,web-80-anywhere-transient,web-443-anywhere-transient,ssh-anywhere-transient,default
       nics: