TorqueSpec can now execute multiple specs within a single deployment

The new configuration option called default_deploy specifies a filename where TorqueSpec should look for an optional default deployment descriptor. If the file exists then this default deployment descriptor is used for all specs except for those which explicitly define a deploy statement within their describe block. The default_deploy configuration option defaults to "default_deploy.yml" and TorqueSpec looks for this file in the spec_root directory.