updated error handling for creating a mirror.

tasks/main.yml

diff --git a/tasks/main.yml b/tasks/main.yml
index 7d451b8..42d0600 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -35,7 +35,7 @@
         backrefs: yes
         backup: yes
         regex: "^(Default).*(requiretty)"
-        line: "\1 !\2"
+        line: "\1 ! \2"
         state: present
 
     - name: Copy archive to target node