www/nginx: Update from 1.12.1 to 1.12.2

• Changelog:
  
  *) Bugfix: client SSL connections were immediately closed if deferred accept and the "proxy_protocol" parameter of the "listen" directive were used.
  
  *) Bugfix: client connections might be dropped during configuration testing when using the "reuseport" parameter of the "listen" directive on Linux.
  
  *) Bugfix: incorrect response length was returned on 32-bit platforms when requesting more than 4 gigabytes with multiple ranges.
  
  *) Bugfix: switching to the next upstream server in the stream module did not work when using the "ssl_preread" directive.
  
  *) Bugfix: when using HTTP/2 client request body might be corrupted.
  
  *) Bugfix: in handling of client addresses when using unix domain sockets.

Update passanger from 5.1.8 to 5.1.11. There was an security advisory:
https://blog.phusion.nl/2017/10/13/passenger-security-advisory-5-1-11/

Approved by: tz (mentor)
MFH: 2017Q4
Differential Revision: https://reviews.freebsd.org/D12706