Robust cert file handling

[lwsystems]

The format of the cert file given with parameter -f is a little bit strict and must be

^<hostname><whitespace><blank>[<blank>,]<portnum>$

If one paste hostname and/or port, a blank could be added by mistake before the end of line or DOS line endings with ( could be added. In this situations, the call of ssl-cert-check will be fail with weird errors.
It would be useful, ssl-cert-check cleans the line before parsing like this:

--- ssl-cert-check 2023-10-09 17:52:21.955896376 +0200
+++ ssl-cert-check.robust 2023-10-09 17:52:35.595892084 +0200
@@ -917,6 +917,7 @@
IFS=$'\n'
for LINE in $(grep -E -v '(^#|^$)' "${SERVERFILE}")
do

•    LINE=$(echo ${LINE}|${SED} -e 's/\t/ /g' -e 's/[\r ]\+$//g')
     HOST=${LINE%% *}
     PORT=${LINE##* }
     IFS=" "
  

Best regards,
Martin