Update nginx configurations

Author: jimchamp

docker/covers_nginx.conf

@@ -1,8 +1,9 @@
 # Keep in sync with web_nginx.conf
 server {
     listen 80 default;
-    listen [::]:443 ssl http2 ipv6only=on;
-    listen 443 ssl http2;
+    listen [::]:443 ssl ipv6only=on;
+    listen 443 ssl;
+    http2 on;
     server_name localhost;
 
     ssl_certificate /etc/letsencrypt/live/covers.openlibrary.org/fullchain.pem;

docker/web_nginx.conf

@@ -48,8 +48,9 @@ map $request_uri $probably_requires_referer {
 # Keep in sync with covers_nginx.conf
 server {
     listen 80 default;
-    listen [::]:443 ssl http2 ipv6only=on;
-    listen 443 ssl http2;
+    listen [::]:443 ssl ipv6only=on;
+    listen 443 ssl;
+    http2 on;
     server_name localhost;
 
     ssl_certificate /etc/letsencrypt/live/openlibrary.org/fullchain.pem;