Adds security group support

Allows security groups to be specified in the template.
Added support for Parallels Desktop for Mac [GH-223]

Added builder plugins: builder-parallels-iso and builder-parallels-pvm.
Added support for Parallels Desktop for Mac [GH-223]

Added documentation for Parallels builder.
Added support for Parallels Desktop for Mac [GH-233] in the vagrant post-processor.

The code originate from https://github.com/YungSang/packer-parallels
Added support for Parallels Desktop for Mac [GH-233] in the vagrant post-processor.

Fixes https://github.com/rickard-von-essen/packer-parallels/issues/3
Merge pull request #1101 from rickard-von-essen/parallels

Add support for Parallels Desktop for Mac [GH-223]
Update CHANGELOG
builder/parallels: update builder ID

We're using packer namespace now
Parallels provider: fix typos
provisioner/chef-client: proper ordering of args [GH-1100]
Merge pull request #1103 from legal90/parallels

builder/parallels: typos
website: document temporary_key_pair_name [GH-1024]
fmt
Merge pull request #848 from nebula/securityGroups

Support for Security Groups in Openstack
Update CHANGELOG
website: update openstack for security groups