Sync execution modules from ``salt://_auth`` to the master

    saltenv : base
        The fileserver environment from which to sync. To sync from more than
        one environment, pass a comma-separated list.

    extmod_whitelist : None
        comma-separated list of modules to sync

    extmod_blacklist : None
        comma-separated list of modules to blacklist based on type

    CLI Example:

    .. code-block:: bash

        salt-run saltutil.sync_auth

def sync_auth(saltenv='base', extmod_whitelist=None, extmod_blacklist=None):
    '''
    Sync execution modules from ``salt://_auth`` to the master

    saltenv : base
        The fileserver environment from which to sync. To sync from more than
        one environment, pass a comma-separated list.

    extmod_whitelist : None
        comma-separated list of modules to sync

    extmod_blacklist : None
        comma-separated list of modules to blacklist based on type

    CLI Example:

    .. code-block:: bash

        salt-run saltutil.sync_auth
    '''
    return salt.utils.extmods.sync(__opts__, 'auth', saltenv=saltenv, extmod_whitelist=extmod_whitelist,
                                   extmod_blacklist=extmod_blacklist)[0]