Use more restrictive mode on temp paths

[anarcat]

I get this on each run here:

Notice: /Stage[main]/Nginx::Config/File[/run/nginx/client_body_temp]/mode: mode changed '0700' to '0755'
Notice: /Stage[main]/Nginx::Config/File[/run/nginx/proxy_temp]/mode: mode changed '0700' to '0755'

It seems like nginx and this module have different opinions on the
correct mode for those directories. I believe Nginx is more correct,
and we should therefore follow it.

Note that this might apply to your module only if you have a global
File default resource defined.

Fixes: #1272

[puppet-community-rangefinder]

nginx::config is a class

Breaking changes to this file MAY impact these 2 modules (near match):

• vshn-uhosting
• halyard-boxen

This module is declared in 9 of 576 indexed public Puppetfiles.

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Exact matches are those that we can positively identify via namespace and the declaring modules' metadata. Non-namespaced items, such as Puppet 3.x functions, will always be reported as near matches only.