(We were only supporting 2.4 anyway.)

This reverts commit 429039819d.

in pillar add 
RedirectMatch: true

Adapted log format to Apache's new default

Other states in this formula allow changing the Apache httpd or module
package on RHEL/CentOS, e.g., one may use packages from the httpd24
SCL to install newer versions than in the base repositories.  This
changes the apache.mod_ssl SLS to match them.

Including optional per-OS templates

(Solves https://github.com/saltstack-formulas/apache-formula/issues/153)

CentOS 6 reports as CentOS-6 rather than CentOS Linux-6 from osfinger grain

with salt-ssh-2016.11.3 it errored out with
TemplateNotFound: apache/map.jinja

and we were already passing in the 'apache' data as 'map'
from standard.sls

because it requires mod_logio to be enabled