Update dependencies in Modulefile

With puppetlabs-openstack now having sane dependencies on
puppetlabs-{neutron,heat,ceilometer}, the Modulefile can
be greatly simplified. In addition, there are now much cleaner
versions of inifile and vswitch, so we can simply use those.
Bump default release to Havana

Changing the kickstack_release default to havana
had been long overdue.
ceilometer: fix rabbit_virtual_host

The ceilometer module changed the name of this parameter
from rabbit_virtualhost to rabbit_virtualhost, so
properly reflect the change.
nova: set install_utilities = false (commented)

The nova module has added a "utilities" class, which installs
libguestfs-tools. Since this installs a slew of dependencies that
only make sense to install on a compute node, the install_utilities
parameter was subsequently added in Git, but has not yet been released
to the Puppet Forge. So as to not make people depend on a version of
puppetlabs-nova that isn't yet on the Puppet Forge, accept the silly
package installation for now, but add the parameter, to be uncommented
when the fix makes it into a module release.
neutron: set tunnel_types

Post-Havana, tunnel_network_type is deprecated in favor of
tunnel_types, and the puppetlabs-neutron module recently reflected this.
Update to be in line with current versions of that module.
Bump module version to 0.2.0