'Set the CLC Credentials on the sdk by reading environment variables
:return: none'

def _set_clc_credentials_from_env(self):

    env = os.environ
    v2_api_token = env.get('CLC_V2_API_TOKEN', False)
    v2_api_username = env.get('CLC_V2_API_USERNAME', False)
    v2_api_passwd = env.get('CLC_V2_API_PASSWD', False)
    clc_alias = env.get('CLC_ACCT_ALIAS', False)
    api_url = env.get('CLC_V2_API_URL', False)
    if api_url:
        self.clc.defaults.ENDPOINT_URL_V2 = api_url
    if (v2_api_token and clc_alias):
        self.clc._LOGIN_TOKEN_V2 = v2_api_token
        self.clc._V2_ENABLED = True
        self.clc.ALIAS = clc_alias
    elif (v2_api_username and v2_api_passwd):
        self.clc.v2.SetCredentials(api_username=v2_api_username, api_passwd=v2_api_passwd)
    else:
        return self.module.fail_json(msg='You    must    set    the    CLC_V2_API_USERNAME    and    CLC_V2_API_PASSWD    environment    variables')
