When using the mod_ssl state on Red Hat family systems the httpd
server will currently not start.

This is due to duplicate Listen directives provided in the
ssl.conf file shipped with the mod_ssl rpm package and the directives
configured by saltstack.

The easy solution is to just ensure the rpm shipped mod_ssl is removed.

The config.sls state uses a hardcoded file path for the welcome
config.
Use the confdir variable to build the path instead to allow for
overrides.

The docroot fix from PR#240 worked fine for default servers.
But as soon as one uses vhosts this broke as the vhosts were
created under the docroot in /var/www/html rather than the better
/var/www.

Fix this by differentiating between docroot and wwwdir.
Further allow to override both in Red Hat-style configs.
The override allows to reuse this formula for the softwarecollections
rpms.

The current docroot ist set to /var/www. This is incorrect.
Fix with correct value /var/www/html.

SUSE reads additional FLAGS that are used on the server start. They are
read from the APACHE_SERVER_FLAGS key, so we use a2enflag/a2disflag to
set those as we do with modules.

* [ssl] [debian] manage ssl.conf with pillars
* [apache] make cyphersuite a list
* [apache/ssl] switch back to strings, lists merge is not good

Makes it easier to clean any unwanted sites

* No more if.
* Allow lookup to set default value for all docroot
* updated pillar.example

unless test -d on file.directory seems useless.

Support for DocumentRootUser and DocumentRootGroup

Detect runtime, rather than before starting/installing anything.

Templates already fallback to SiteName before site id.

This attemps to be consistent with them, and avoid having to explicitly specify
the DocumentRoot, when the template already does the proper inference.

(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)