[Let's Encrypt] Add extended logging of cron task execution

[dmitrykhimich]

The log /var/log/letsencrypt.log does not mention the result of the script execution from the cron task.
Logging should be added to simplify debugging.

Most likely an additional redirect should be added here

lets-encrypt/scripts/ssl-manager.js

Line 1447 in 0260452

"echo \"%(cronTime) su - root -c \\\"%(scriptPath) '%(autoUpdateUrl)' >> %(log)\\\"\" >> /var/spool/cron/root"

[lazarenkoalexey]

Te simplest case is write resp variable into letsencrypt.log file. Wget redirects in one stream only - variable or log file.
So each time while auto updating the response out will be set in log file
#298

[SlavaKatiukha]

Additional echo is okay in this case, but you don't need to redirect the output manually (see #298). Also, we still ended up without stderr in logs 🙂. So, the 2>&1 is also needed here:

lets-encrypt/scripts/ssl-manager.js

Line 1447 in 0260452

"echo \"%(cronTime) su - root -c \\\"%(scriptPath) '%(autoUpdateUrl)' >> %(log)\\\"\" >> /var/spool/cron/root"

(>> %(log) 2>&1)