Update to 2.8.0:

Feature improvements:

• Signature updates: Fedora 24/25, Ubuntu 16.10, Virtuozzo 7
• Allow https method in repo management (#1587)
• Add support for the ppc64le architecture
• Backport gpxe mac search argument
• Added support for fixed DHCP IPs when using vlan over bond
• Add support for Django 1.7.x and 1.8.x
• Add action name to cobbler action --help output

Bugfixes:

• Added HOSTS_ALLOW acl in settings.py (CVE-2016-9014)
• Profile template logic seperated for grub and pxelinux formats
• Refer to system_name in grubsystem.template
• Add netmask and dhcp_tag to slave interfaces in ISC DHCP
• Koan now works with CentOS version numbers
• Fixes to pxesystem_esxi.template
• Move get-loaders to https transport
• Add default/timeout to grubsystem.template
• Anamon now actually waits on files that you specify with --watchfiles
• Do not set interface["filename"] to /pxelinux.0 in manage_isc.py (#1565)
• Allow the use of relative paths when importing a distro (#1613)
• Fix /etc/xinetd.d/rsync check (#1651)
• Exit with a appropriate message when signature file can't be parsed
• Handle cases where virt-install responds to --version on stderr (Koan)
• Fix mangling of kernel options in edit profile command with --in-place
• Several fixes to Koan regarding os-info-query and os-variants