builder/vmware: Add templating to VMware SSH host option

builder/parallels: Detect path to Parallels Tools ISO automatically

"guest_os_distribution" become deprecated and is not required anymore.
But if it is defined (in outdated templates),then the value will be copied to "guest_os_type" and warning will be displayed.

'parallels_tools_host_path' param is deprecated
'parallels_tools_flavor' is added (mandatory).

builder/openstack: error out when gets blank keypair

builder/qemu: add machine_type option for qemu builder.

builder/openstack: Make region not required if not rackspace

builder/amazon-instance: Use Region not S3Endpoint (see Issue 1424)

Updating check for version when on devel.

website: Updating Ubuntu 12.04 ISO location and checksum

docs: toc and title fixes

builder/digitalocean: add ability to set api url in template

builder/amazon-instance: It's possible to create instance-store images from EBS-based images

It's not necessary to use an instance-store image to build an instance-store image, see this example http://sorcery.smugmug.com/2014/01/29/instance-store-hvm-amis-for-amazon-ec2/ so there should be no restriction on the ExpectedRootDevice

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>

builder/parallels: Added some navigation keys in "boot_command". Fixes [GH-1442]

Enhancements for Parallels builder

We have to set either 'ostype' or 'distribution', but not both.

parallels: Support for Parallels Desktop 10

Fixed multiple VMware typos.

Add `page_title` attribute to each documentation file for which it didn't already exist, matching the value to each page's h1, respectively.