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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def spm_config(path):
    '''
    Read in the salt master config file and add additional configs that
    need to be stubbed out for spm

    .. versionadded:: 2015.8.0
    '''
    # Let's grab a copy of salt's master default opts
    defaults = DEFAULT_MASTER_OPTS.copy()
    # Let's override them with spm's required defaults
    defaults.update(DEFAULT_SPM_OPTS)

    overrides = load_config(path, 'SPM_CONFIG', DEFAULT_SPM_OPTS['spm_conf_file'])
    default_include = overrides.get('spm_default_include',
                                    defaults['spm_default_include'])
    include = overrides.get('include', [])

    overrides.update(include_config(default_include, path, verbose=False))
    overrides.update(include_config(include, path, verbose=True))
    defaults = apply_master_config(overrides, defaults)
    defaults = apply_spm_config(overrides, defaults)
    return client_config(path, env_var='SPM_CONFIG', defaults=defaults)