Make beta nature of dependency management stuff more explicit.

- Hide it from the cwltool help.
- Add beta- prefix to the configuration options.

Author: jmchilton

cwltool/main.py

@@ -136,8 +136,10 @@ def arg_parser():  # type: () -> argparse.ArgumentParser
     exgroup.add_argument("--quiet", action="store_true", help="Only print warnings and errors.")
     exgroup.add_argument("--debug", action="store_true", help="Print even more logging")
 
-    parser.add_argument("--dependency-resolvers-configuration", help="Dependency resolver configuration file describing how to adapt 'Dependency' hints to current system.", default=None)
-    parser.add_argument("--dependencies-directory", help="Defaut root directory used by dependency resolvers configuration.", default=None)
+    # help="Dependency resolver configuration file describing how to adapt 'Dependency' hints to current system."
+    parser.add_argument("--beta-dependency-resolvers-configuration", default=None, help=argparse.SUPPRESS)
+    # help="Defaut root directory used by dependency resolvers configuration."
+    parser.add_argument("--beta-dependencies-directory", default=None, help=argparse.SUPPRESS)
 
     parser.add_argument("--tool-help", action="store_true", help="Print command line help for tool")
 
@@ -699,8 +701,8 @@ def main(argsl=None,
 class DependenciesConfigruation(object):
 
     def __init__(self, args):
-        conf_file = getattr(args, "dependency_resolvers_configuration", None)
-        tool_dependency_dir = getattr(args, "dependencies_directory", None)
+        conf_file = getattr(args, "beta_dependency_resolvers_configuration", None)
+        tool_dependency_dir = getattr(args, "beta_dependencies_directory", None)
         if conf_file is not None and os.path.exists(conf_file):
             self.use_tool_dependencies = True
             if not tool_dependency_dir: