Fix php upstream with TCP socket

templates/etc/nginx/conf.d/php.conf.j2

@@ -5,7 +5,7 @@
 {% for php in nginx_php %}
 upstream {{ php.upstream_name | default((php.version | php_default_upstream_name)) }} {
 {% for sock in php.sockets | default([]) %}
-{% if php.host is defined %}
+{% if sock.host is defined %}
     server {{ sock.host }}:{{ sock.port }} weight={{ sock.weight | default('1') }} max_fails={{ sock.max_fails | default('5') }} fail_timeout={{ sock.fail_timeout | default('10s') }};
 {% else %}
     server unix:{{ sock.unix | default((php.version | php_default_upstream_socket)) }} weight={{ sock.weight | default('1') }};