[COOK-1689] - The perl package name should be configurable

Signed-off-by: Sean OMeara <someara@opscode.com>
[COOK-3863] Recipe for activating mod_jk

Signed-off-by: Sean OMeara <someara@opscode.com>
[COOK-3919] - Move the default pidfile for apache2 on Ubuntu 13.10 or greater

Signed-off-by: Sean OMeara <someara@opscode.com>
[COOK-4043] - apache2 cookbook does not depend on iptables

Signed-off-by: Sean OMeara <someara@opscode.com>