Return modules for SPM's package database

    .. versionadded:: 2015.8.0

def pkgdb(opts):
    '''
    Return modules for SPM's package database

    .. versionadded:: 2015.8.0
    '''
    return LazyLoader(
        _module_dirs(
            opts,
            'pkgdb',
            base_path=os.path.join(SALT_BASE_PATH, 'spm')
        ),
        opts,
        tag='pkgdb'
    )