Log secure boot access failures at INFO level

Handle Supermicro BMC `OemLicenseNotPassed` error.

Story: 2011154
Change-Id: I288099bf276357c884bdee798be5200dea0cf046

ironic/drivers/modules/redfish/management.py

@@ -1165,11 +1165,20 @@ class RedfishManagement(base.ManagementInterface):
             runtime error.
         :raises: UnsupportedDriverExtension if secure boot is
                  not supported by the hardware.
-        :returns: Boolean
+        :returns: Boolean or None if status cannot be retrieved
         """
         system = redfish_utils.get_system(task.node)
         try:
             return system.secure_boot.enabled
+        except sushy.exceptions.AccessError as e:
+            if 'OemLicenseNotPassed' in str(e):
+                # NOTE(cid): Supermicro gear requires a license to report
+                # secure boot status.
+                LOG.info("Secure boot status request through Redfish failed "
+                         "for node %(node)s: %(error)s",
+                         {'node': task.node.uuid, 'error': e})
+                return None
+            raise
         except sushy.exceptions.MissingAttributeError:
             raise exception.UnsupportedDriverExtension(
                 driver=task.node.driver, extension='get_secure_boot_state')

releasenotes/notes/reduce-secure-boot-noisy-exceptions-to-INFO-logs-24479c994d93de21.yaml

@@ -0,0 +1,4 @@
+---
+fixes:
+  - |
+    Log non-recoverable secure boot status check failures at INFO level.