Move methods that interact with OpenSSL binary to a separate class as they will be useful to other tests.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1614869 13f79535-47bb-0310-9956-ffa450edef68
Skip the OpenSSL tests if the expected version is not available

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1614880 13f79535-47bb-0310-9956-ffa450edef68