Add support for OpenStack clouds.
Add the 998-openstack config file.
Check hypvervisor type for choosing the disk driver when using OpenStack.
Modify configuration file for apache2 version >= 2.4.
Merge pull request #13 from ConPaaS-team/openstack_support

Add support for OpenStack clouds.
Merge pull request #14 from ConPaaS-team/update_apache_config

Modify configuration file for apache2 version >= 2.4.
Fix whitespace.
Merge branch 'master' of https://github.com/ConPaaS-team/conpaas
Merge branch 'master' of https://github.com/ConPaaS-team/conpaas