[sysadmin-bin] Handle dashes properly

[Andrea Veri <averi src gnome org>]

commit 9fea529eb8ebbd056d75277b4e8469735b7541a9
Author: Andrea Veri <averi redhat com>
Date:   Thu Mar 29 17:36:38 2018 +0200

    Handle dashes properly

 letsencrypt/letsencrypt_dns_del.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/letsencrypt/letsencrypt_dns_del.sh b/letsencrypt/letsencrypt_dns_del.sh
index fdcf003..5f424cd 100644
--- a/letsencrypt/letsencrypt_dns_del.sh
+++ b/letsencrypt/letsencrypt_dns_del.sh
@@ -18,7 +18,7 @@ if [ -d /tmp/dns ]; then
     done
 
     ln=`grep -n "_acme-challenge.${domain}." master/$extracted_domain \
-           | grep "${token}" | cut -d: -f 1`
+           | grep "${token//-/\\-}" | cut -d: -f 1`
 
     if [[ -n "${ln}" ]]; then 
         sed -i "${ln}d" "master/${extracted_domain}"