Updated ruby-rest-client packages fix security vulnerabilities

Updated ruby-rest-client packages fix security vulnerability: When Ruby rest-client processes an HTTP redirection response, it blindly passes along the values from any Set-Cookie headers to the redirection target, regardless of domain, path, or expiration. This can be used in a session fixation attack or in stealing cookies (CVE-2015-1820). REST Client for Ruby contains a flaw that is due to the application logging password information in plaintext. This may allow a local attacker to gain access to password information (CVE-2015-3448). The ruby-rest-client package has been updated to version 1.8.0, fixing these issues and several other bugs. Refer to the upstream changelog for more details.