Let's encrypt certificate renewal

[Jacques Le Roux]

Dear Infra team,

The OFBiz project recently suffered a Let's encrypt certificate renewal failure. I asked for help on Infra HipChat room and it got quickly fixed with
the help of Chris Thistlethwaite (thanks again Chris:))

Then I reported to the OFBiz team here https://s.apache.org/xBT8

Richard Siddall, one of our user, suggested to have a look at https://github.com/dthielking/puppet_getssl

I did not check what is used in Puppet at the ASF, but in case it was worth it I decided to send this message

Thanks

Jacques