Windows test does not detect executables

================================== FAILURES ===================================
_________________ test_uninstall_cli_only_when_no_apps_remain _________________

    def test_uninstall_cli_only_when_no_apps_remain():
        with util.temptext(b'\{"name": "/hello1"}') as opts_hello1, \
                util.temptext(b'\{"name": "/hello2"}') as opts_hello2:
            stderr = (
                b'This is a Community service. '
                b'Community services are not tested '
                b'for production environments. '
                b'There may be bugs, incomplete features, '
                b'incorrect documentation, or other discrepancies.\n'
                b'By Deploying, you agree to the Terms '
                b'and Conditions [https://mesosphere.com/]'
                b'catalog-terms-conditions/#community-services\n'
                b'A sample pre-installation message\n'
                b'Installing Marathon app for package [helloworld] version '
                b'[0.1.0]\n'
                b'Installing CLI subcommand for package [helloworld] '
                b'version [0.1.0]\n'
                b'New commands available: http\n'
                b'A sample post-installation message\n'
            )
    
            uninstall_stderr = (
                b'Uninstalled package [helloworld] version [0.1.0]\n'
            )
            with _package(name='helloworld',
                          args=['--yes', '--options='+opts_hello1[1]],
                          stderr=stderr,
                          uninstall_app_id='/hello1',
                          uninstall_stderr=uninstall_stderr):
    
                with _package(name='helloworld',
                              args=['--yes', '--options='+opts_hello2[1]],
                              stderr=stderr,
                              uninstall_app_id='/hello2',
                              uninstall_stderr=uninstall_stderr):
    
>                   subcommand.command_executables('http')

tests\integrations\test_package.py:302: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

subcommand = 'http'

    def command_executables(subcommand):
        """List the real path to executable dcos program for specified subcommand.
    
        :param subcommand: name of subcommand. E.g. marathon
        :type subcommand: str
        :returns: the dcos program path
        :rtype: str
        """
    
        executables = []
        if subcommand in default_subcommands():
            executables += [default_list_paths()]
    
        executables += [
            command_path
            for command_path in list_paths()
            if noun(command_path) == subcommand
        ]
    
        if len(executables) > 1:
            msg = 'Found more than one executable for command \{!r}. \{!r}'
            raise DCOSException(msg.format(subcommand, executables))
    
        if len(executables) == 0:
            msg = "\{!r} is not a dcos command."
>           raise DCOSException(msg.format(subcommand))
E           dcos.errors.DCOSException: 'http' is not a dcos command.

..\dcos\dcos\subcommand.py:49: DCOSException