Remove the sudo from DNS guide

This was caused by me doing some things as root instead as my own user.

Signed-off-by: Michal Konecny <mkonecny@redhat.com>

modules/sysadmin_guide/pages/new-virtual-hosts.adoc

@@ -88,10 +88,10 @@ Once that is committed, you need to run a script to build the zones and
 then push them to the dns servers.:
 
 ....
-sudo ./do-domains # This builds the files
+./do-domains # This builds the files
 git add .
 git commit -a -m 'done build'
-sudo git push
+git push
 
 $ sudo -i ansible ns\* -a '/usr/local/bin/update-dns' # This tells the dns servers to load the new files
 ....