def oo_selector_to_string_list(user_dict):
    """Convert a dict of selectors to a key=value list of strings

Given input of {'region': 'infra', 'zone': 'primary'} returns a list
of items as ['region=infra', 'zone=primary']
    """
    selectors = []
    for key in user_dict:
        selectors.append("{}={}".format(key, user_dict[key]))
    return selectors