chore: nginx temp directories permissions

[bdossantos]

Hi !

This PR add a fix to ensure Proxy, body, fastcgi, uwsgi, scgi temp directories presence and writeable permissions. Those directories are needed as tmp location for large responses that doesn't fit in buffers.

[bdossantos]

I found a workaround that makes this PR more or less "obsolete".

I use nginx_http_params array to set my client_body_temp_path, proxy_cache_path, etc, eg:

 nginx_http_params:
  - sendfile 'on'
  - tcp_nopush 'on'
  - tcp_nodelay 'on'
  - keepalive_timeout '20'
  - access_log "{{ nginx_log_dir }}/access.log"
  - error_log "{{ nginx_log_dir }}/error.log"
  - server_names_hash_max_size 512
  - server_names_hash_bucket_size 128
  - server_tokens off
  - types_hash_max_size 2048
  - proxy_cache_path /dev/shm/cache levels=1:2 keys_zone=CACHE:1024m inactive=24h max_size=1024m
  - client_body_temp_path /dev/shm/client_body
  - fastcgi_temp_path /dev/shm/fastcgi
  - proxy_temp_path /dev/shm/proxy

[jdauphant]

:+1: Thanks for the research. It's better to keep it simple ;)