(proxy) fix cache_store_log location, closes https://github.com/opnsense/core/issues/645

src/opnsense/service/templates/OPNsense/Proxy/squid.conf

@@ -312,6 +312,8 @@ access_log /var/log/squid/access.log squid !accesslog_ignore
 {%      if OPNsense.proxy.general.logging.enable.storeLog == '0' %}
 # Disable cache store log
 cache_store_log none
+{%      else %}
+cache_store_log /var/log/squid/store.log
 {%      endif %}
 {% endif %}
 {% if helpers.exists('OPNsense.proxy.general.alternateDNSservers' ) %}