v2.0.0

• Drop GRAM, RHEL5, OSG < 3.3, and dCache storage probe tests (SOFTWARE-2592, SOFTWARE-2913, SOFTWARE-2955)
• Add GridFTP-HDFS, XRootD-HDFS, and singularity tests (SOFTWARE-2639, SOFTWARE-2884)
• Fix tomcat startup issues in tests d.t. lack of entropy (SOFTWARE-2880)
• Fix GSISSH 3.3 EL7 test failures (SOFTWARE-2837)