Given function name, find and return matching Lambda information.

def _find_function(name,
                   region=None, key=None, keyid=None, profile=None):
    '''
    Given function name, find and return matching Lambda information.
    '''
    conn = _get_conn(region=region, key=key, keyid=keyid, profile=profile)

    for funcs in __utils__['boto3.paged_call'](conn.list_functions):
        for func in funcs['Functions']:
            if func['FunctionName'] == name:
                return func
    return None