SUSE-SU-2018:2561-1

Description of the patch:

This update for cobbler fixes the following issues:

Security issues fixed:

• Forbid exposure of private methods in the API (CVE-2018-10931, CVE-2018-1000225, bsc#1104287, bsc#1104189, bsc#1105442)
• Check access token when calling 'modify_setting' API endpoint (bsc#1104190, bsc#1105440, CVE-2018-1000226)

Other bugs fixed:

• Do not try to hardlink to a symlink. The result will be a dangling symlink in the general case. (bsc#1097733)
• fix kernel options when generating bootiso (bsc#1101670)