Enable mod_deflate

Enabled mod_deflate for:
* text/html (HTML files)
* text/plain (for future use)
* text/css (CSS files)
* text/xml (XML RPC)
* application/javascript (JavaScript files)
* application/json (JSON RPC)
* application/x-font-woff (woff fonts)

Added proper mime type for woff fonts.
Disabled etag header because it doesn't work with mod_deflate.

https://fedorahosted.org/freeipa/ticket/3326

install/conf/ipa.conf

@@ -1,5 +1,5 @@
 #
-# VERSION 10 - DO NOT REMOVE THIS LINE
+# VERSION 11 - DO NOT REMOVE THIS LINE
 #
 # This file may be overwritten on upgrades.
 #
@@ -22,6 +22,18 @@ LimitRequestFieldSize 100000
 AddType application/java-archive        jar
 AddType application/x-xpinstall         xpi
 
+# Proper header for .woff fonts
+AddType application/x-font-woff         woff
+
+# Enable compression
+AddOutputFilterByType DEFLATE text/html text/plain text/xml \
+ application/javascript application/json text/css
+
+# Disable etag http header. Doesn't work well with mod_deflate
+# https://issues.apache.org/bugzilla/show_bug.cgi?id=45023
+# Usage of last-modified header and modified-since validator is sufficient.
+Header unset ETag
+FileETag None
 
 # FIXME: WSGISocketPrefix is a server-scope directive.  The mod_wsgi package
 # should really be fixed by adding this its /etc/httpd/conf.d/wsgi.conf: