Adds security group support

Allows security groups to be specified in the template.
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
builder/parallels: fixed Builder ID

Caused by changing namespace to 'packer.*' (3a68c8a)