Updated python-yaml packages fix security vulnerability

It was found that using yaml.load API on untrusted input could lead to arbitrary code execution CVE-2017-18342...

MGASA-2014-0040 Updated yaml packages fix CVE-2013-6393

Updated libyaml packages fix security vulnerabilities: Florian Weimer of the Red Hat Product Security Team discovered a heap-based buffer overflow flaw in LibYAML, a fast YAML 1.1 parser and emitter library. A remote attacker could provide a YAML document with a specially-crafted tag that, when...