Add expect clear header

Signed-off-by: Patrick Uiterwijk <puiterwijk@redhat.com>

playbooks/include/proxies-reverseproxy.yml

@@ -497,17 +497,22 @@
     website: geoip.fedoraproject.org
     proxyurl: http://localhost:10029
 
-  # Reverse proxy pkgs for integrity protection of anonymous clones
   - role: httpd/reverseproxy
     website: src.fedoraproject.org
     destname: git
     proxyurl: http://localhost:10057
+    header_scheme: true
+    header_expect: true
+    keephost: true
     when: env == "production"
 
   - role: httpd/reverseproxy
     website: src.stg.fedoraproject.org
     destname: git
     proxyurl: http://localhost:10057
+    header_scheme: true
+    header_expect: true
+    keephost: true
     when: env == "staging"
 
   - role: httpd/reverseproxy

roles/httpd/reverseproxy/templates/reversepassproxy.conf

@@ -9,7 +9,10 @@ RequestHeader set X-Scheme https early
 RequestHeader set X-Forwarded-Proto https early
 
 {% endif %}
+{% if header_expect %}
+RequestHeader unset Expect early
 
+{% endif %}
 {% if keephost %}
 ProxyPreserveHost On
 {% endif %}