pagure/src: see about enabling h2

I'll try this in stg first and then roll to prod if all looks ok.
I don't see any reason why it wouldn't work off hand.

Signed-off-by: Kevin Fenzi <kevin@scrye.com>

playbooks/include/proxies-websites.yml

@@ -172,7 +172,7 @@
     server_aliases: [src.stg.fedoraproject.org]
     cert_name: "{{wildcard_cert_name}}"
     sslonly: true
-    use_h2: false
+    use_h2: true
 
   - role: httpd/website
     site_name: download.fedoraproject.org

roles/apache/tasks/main.yml

@@ -11,6 +11,16 @@
   - apache
   when: ansible_cmdline.ostree is not defined
 
+- name: install mod_http2 on rhel8 hosts
+  package:
+    state: present
+    name:
+     - mod_http2
+  tags:
+  - packages
+  - apache
+  when: ansible_distribution_major_version|int >= 8 and ansible_distribution == 'RedHat'
+
 - name: set apache running/enabled
   service: name=httpd enabled=yes
   ignore_errors: true

roles/pagure/templates/0_pagure.conf

@@ -6,6 +6,8 @@ WSGIPassAuthorization On
 WSGIDaemonProcess pagure user=git group=git maximum-requests=1000 display-name=pagure processes=10 threads=6 inactivity-timeout=300
 WSGIDaemonProcess paguredocs user=git group=git maximum-requests=1000 display-name=paguredocs processes=4 threads=4 inactivity-timeout=300
 
+Protocols h2 h2c http/1.1
+
 ## Redirects http -> https
 
 <VirtualHost *:80>