[feature] Support boot command for pvm builder

Similar to [GH-1082] but for parallels-pvm builder.
Parallels builder mistypes boot command on OmniOS

Fixes [GH-1185] and adds tests for the boot command.
Also requires the latest prl-utils (e592a15) to fix the stuck on enter
while typing.
Parallels errors while creating floppy disk GH-1225

Patch applied with modifications - tests updated to pass.
Parallels-iso errors while removing floppy drive GH-1226

Status "stopping" should be handled in IsRunning
Force IPv4 addresses from address pools in Openstack. Fixes #1258

Rackspace defaults to a public IPv4 and IPv6 address. These are returned in
random order, with the sprintf further on generating an incorrect connection
string if on IPv6. Force IPv4 until support for correct connection strings and
a configuration flag for logging in over IPv6 is added.
Add ability to configure networks for openstack

Add configuration option `networks`, a list of network UUIDs, to attach to the
source instance.

In some openstack installs, no default network will be attached or the network
with the ability to attach a public floating IP will need to be specified.
Merge pull request #1259 from lflux/openstack-force-ipv4-ssh

Force IPv4 addresses from address pools in Openstack. Fixes #1258
Update CHANGELOG.md
Reorder documentation into alphabetical order
Don't use a real domain in examples.

Use example.com instead.
Merge pull request #1262 from thorduri/master

website: Don't use a real domain in examples.
Merge pull request #1261 from lflux/openstack-networks-support

Add ability to configure networks for openstack
Update CHANGELOG.md
increase VMware cleanup timeout to 120 seconds
Merge pull request #1272 from StefanScherer/fix_1267_increase_vmware_cleanup_timeout

increase VMware cleanup timeout to 120 seconds
Update CHANGELOG.md
Update to CentOS 6.5
Improve the boot command sequence

Use a single command line, avoid the graphical installer, and use {{ .HTTPIP }} rather than the actual IP.
Also wait a bit before entering the commands to increase the chance of actually being in the boot menu.
Update the kickstart link

Instead of pointing at a specific (in this case actually non-working!) revision, point to the github UI for the
head revision.
The user is expected to find the 'raw' link there, but the page allows to also quickly look at changes etc, which
might be helpful for people unfamiliar with kickstart files.
Properly escape security_group_id to avoid markdown interpretation of the '_'