make sure renew service user has proper name (#49)

Author: zluudg

deb/DEBIAN/postinst

@@ -2,7 +2,7 @@
 set -e
 
 getent group dnstapir || addgroup dnstapir
-getent passwd tapir-renew || adduser --ingroup dnstapir --system tapir-renew
+getent passwd dnstapir-renew || adduser --ingroup dnstapir --system dnstapir-renew
 
 if [ -z "$2" ]; then
     chown root:dnstapir /etc/dnstapir/certs