Given a typical Salt SLS path (e.g.: apache.vhosts.standard), find the
        file on the file system and parse it

def parse_file(self, sls_path):
        '''
        Given a typical Salt SLS path (e.g.: apache.vhosts.standard), find the
        file on the file system and parse it
        '''
        config = self.state.document.settings.env.config
        formulas_dirs = config.formulas_dirs
        fpath = sls_path.replace('.', '/')

        name_options = (
            '{0}.sls'.format(fpath),
            os.path.join(fpath, 'init.sls')
        )

        paths = [os.path.join(fdir, fname)
                for fname in name_options
                    for fdir in formulas_dirs]

        for i in paths:
            try:
                with open(i, 'rb') as f:
                    return f.readlines()
            except IOError:
                pass

        raise IOError("Could not find sls file '{0}'".format(sls_path))