docs: def initialize_switch_endpoints(self):
          """Initialize endpoints for switch communication"""
          self._switches = {}
          self._port_group_info = {}
          self._validate_config()
          for s in cfg.CONF.ml2_arista.switch_info:
              switch_ip, switch_user, switch_pass = s.split(":")
              if switch_pass == "''":
                  switch_pass = ''
              self._switches[switch_ip] = api.EAPIClient(
                  switch_ip,
                  switch_user,
                  switch_pass,
                  verify=False,
                  timeout=cfg.CONF.ml2_arista.conn_timeout)
          self._check_dynamic_acl_support()