If a collision happens between cert upgrade and general upgrade then create the failure file so that retries will happen

src/freedombone-utils-web

     # the main script tries to renew once per month
     { echo '#!/bin/bash';
       echo '';
+      echo 'if [ -f /tmp/.upgrading ]; then';
+      echo '    if [ ! -f ~/letsencrypt_failed ]; then';
+      echo '        touch ~/letsencrypt_failed';
+      echo '    fi';
+      echo '    exit 0';
+      echo 'fi';
+      echo '';
       echo "PROJECT_NAME='${PROJECT_NAME}'";
       echo "COMPLETION_FILE=\$HOME/\${PROJECT_NAME}-completed.txt";
       echo '';
       echo "}')";
       echo "    ADMIN_EMAIL_ADDRESS=\$ADMIN_USERNAME@\$HOSTNAME";
       echo '    for d in /etc/letsencrypt/live/*/ ; do';
+      echo '';
+      echo '        if [ -f /tmp/.upgrading ]; then';
+      echo '            if [ ! -f ~/letsencrypt_failed ]; then';
+      echo '                touch ~/letsencrypt_failed';
+      echo '            fi';
+      echo '            exit 0';
+      echo '        fi';
+      echo '';
       echo -n "        LETSENCRYPT_DOMAIN=\$(echo \"\$d\" | ";
       echo -n "awk -F '/' '{print ";
       echo -n "\$5";
     { echo '#!/bin/bash';
       echo '';
       echo 'if [ -f /tmp/.upgrading ]; then';
+      echo '    if [ ! -f ~/letsencrypt_failed ]; then';
+      echo '        touch ~/letsencrypt_failed';
+      echo '    fi';
       echo '    exit 0';
       echo 'fi';
       echo '';
       echo '        for d in /etc/letsencrypt/live/*/ ; do';
       echo '';
       echo '            if [ -f /tmp/.upgrading ]; then';
+      echo '                if [ ! -f ~/letsencrypt_failed ]; then';
+      echo '                    touch ~/letsencrypt_failed';
+      echo '                fi';
       echo '                exit 0';
       echo '            fi';
       echo '';