borg: fix connection test when remote dir exists

When testing the connection via ssh forced command, if the remote path
is an empty directory (instead of nonexistent), the handler bails even
tough the connection is successful.

Co-authored-by: Emil Breiner <emil.breinr@krumedia.com>

handlers/borg.in

@@ -106,14 +106,13 @@ if [ "$host" != "localhost" ] && ([ "$testconnect" = "yes" ] || [ "${test}" -eq
       teststr="borg list --show-rc -v $execstr_repository"
       debug "$teststr"
       output=`su -c "$teststr" 2>&1`
-      if echo "$output" | grep "terminating with success status" ; then
+      if echo "$output" | grep "terminating with success status" \
+         || echo "$output" | grep "^\S\+ is not a valid repository." \
+         || echo "$output" | grep "^Repository \S\+ does not exist."; then
          debug "Connected to $host as $user successfully (forced command)"
       else
-         if echo "$output" | grep -E "Repository.+does not exist" ; then
-            debug "Connected to $host as $user successfully (forced command)"
-         else
-            fatal "Can't connect to $host as $user."
-         fi
+         error $output
+         fatal "Can't connect to $host as $user."
       fi
    fi
 fi