Merge pull request #21 from shwetaap/master

Bug #1163982 Enable cobbler to send http/https requests to ucsm

Cobbler will send https requests to the UCSM by default instead of http

Assorted changes to add new options

Changeable admin user

Change mountpoint in preseed to /var/lib/nova

Add a no_default_route option to the preseed file, defaults to false

Don't set partman-auto/disk if diskpart is empty

Don't manage dns if no dns_service is set

and another preseed tweak...

Fix indentation and package selection logic

Don't set boot_disk in preseed

Don't suppress linefeeds in ntp settings

further tweaks to the preseed

if no ntp_server is set, don't include the ntp section.