Onboard kevr as project maintainer

Fix #438 (closed)

roles/grafana/templates/nginx.d.conf.j2

@@ -41,6 +41,7 @@ server {
 
 {% set proxy -%}
         proxy_pass http://grafana;
+        proxy_set_header Host $host;
         proxy_set_header X-Forwarded-For      $remote_addr;
         proxy_set_header Upgrade $http_upgrade;
         proxy_set_header Connection $connection_upgrade;