Refresh token between verify

The first verify phase may be delayed,
and in such a case could straddle bad
timing of the token expiry.  Refresh
between the phases to mitigate risk
of expiring the token in the middle of
running.

Change-Id: Ia96fa8824a2e9e8eff8fd2d353b1b0bc7fa710a7

pyghmi/ipmi/oem/lenovo/imm.py

@@ -1466,6 +1466,7 @@ class XCCClient(IMMClient):
         if rsp.get('return', -1) != 0:
             errmsg = repr(rsp) if rsp else self.wc.lastjsonerror
             raise Exception('Unexpected return to set filename: ' + errmsg)
+        self._refresh_token()
         progress({'phase': 'validating',
                   'progress': 25.0})
         rsp = self.wc.grab_json_response('/api/providers/fwupdate', json.dumps(