Add options to configure TIMEOUTclose and debug on stunnel package
This PR1 add options to configure TIMEOUTclose and debug (log level) and also fix package doc URL on the manifest.
I had too much logging being generated from stunnel and I preferred to decrease the log level to warning instead of notice. I also added the timeoutclose option so people can not set or set a different timeout if they want.
Note that the defaults are set to both options, maintaining old behaviour with NOTICE loglevel and TIMEOUTclose=0, so people upgrading shouldn't have any impact.
Wagner Sartori Junior
tested on CE built on Thu Feb 07 19:44:20 EST 2019 <--> factory built on Thu Feb 07 18:13:07 EST 2019
tested web traffic via stunnel between with different log levels - got different amount of logs depending on verbosity level.
Tested with intentionally set wrong redirect port (pointing to nowhere instead of webserver behind pfsense) - got error logs with ERROR loglevel set, and no error with less chatty loglevel.
At first glance - looks good.