Add nginx gzip conf

vars/nginx_vars.yml

@@ -6,6 +6,13 @@ galaxy_nginx_vhost_config:
     auth: "{{ _molecule_active | ternary(omit, 'sram') }}"
     proxy_set_header:
       GX_SECRET: "{{ _galaxy_remote_user_secret | default(omit) }}"
+    gzip: 'on'
+    gzip_http_version: 1.1
+    gzip_vary: 'on'
+    gzip_comp_level: 6
+    gzip_proxied: any
+    gzip_types: text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript
+    gzip_buffers: 16 8k
   - name: api
     location: /api/
     proxy_pass: "http://{{ _galaxy_local_address }}/api/"
@@ -50,3 +57,4 @@ galaxy_nginx_vhost_config:
       Connection: 'Upgrade'
       client_max_body_size: '0'
       proxy_pass: http://localhost:{{ tusd_port }}/files;
+