Add use_temp_path into proxy_cache_path

[Slm0n87]

see http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_cache_path

[Slm0n87]

can someone help to fix this test?

$ ruby --version

ruby 1.9.3p551 (2014-11-13 revision 48407) [x86_64-linux]

$ rvm --version

rvm 1.26.10 (latest-minor) by Wayne E. Seguin <wayneeseguin@gmail.com>, Michal Papis <mpapis@gmail.com> [https://rvm.io/]

$ bundle --version

Bundler version 1.7.6

$ gem --version

2.4.5

40.71s$ bundle install --without system_tests --path=${BUNDLE_PATH:-vendor/bundle}

Fetching gem metadata from https://rubygems.org/..........

Resolving dependencies....

Installing rake 11.2.2

Installing CFPropertyList 2.2.8

Installing diff-lcs 1.2.5

Installing unf_ext 0.0.7.2

Installing unf 0.1.4

Installing domain_name 0.5.20160615

Installing facter 2.4.6

Gem::InstallError: json_pure requires Ruby version ~> 2.0.

An error occurred while installing json_pure (2.0.2), and Bundler cannot

continue.

Make sure that `gem install json_pure -v '2.0.2'` succeeds before bundling.

The command "eval bundle install --without system_tests --path=${BUNDLE_PATH:-vendor/bundle}" failed. Retrying, 2 of 3.

[3flex]

I fixed the test in master branch - merging, thanks for the contribution!