Merge ~seyeongkim/maas:lp1929478_to_3.0 into maas:3.0

[Seyeong Kim]

backport fix for lp1929478 to 3.0

[MAAS Lander (maas-lander)]

UNIT TESTS
-b lp1929478_to_3.0 lp:~seyeongkim/maas/+git/maas into -b 3.0 lp:~maas-committers/maas

STATUS: SUCCESS
COMMIT: aee11ba46c59b11bb6f66d2241316e7e882fa773

review: Approve

[Jack Lloyd-Walters (lloydwaltersj)]

+1

review: Approve

[MAAS Lander (maas-lander)]

UNABLE TO START LANDING

STATUS: MISSING COMMIT MESSAGE

[MAAS Lander (maas-lander)]

UNABLE TO START LANDING

STATUS: MISSING COMMIT MESSAGE

diff --git a/src/metadataserver/builtin_scripts/commissioning_scripts/bmc_config.py b/src/metadataserver/builtin_scripts/commissioning_scripts/bmc_config.py
index 42e4c79..4da0512 100755
--- a/src/metadataserver/builtin_scripts/commissioning_scripts/bmc_config.py
+++ b/src/metadataserver/builtin_scripts/commissioning_scripts/bmc_config.py
@@ -190,7 +190,7 @@ class IPMI(BMCConfig):
             )
             raise
         section = None
-        for line in proc.stdout.decode().splitlines():
+        for line in proc.stdout.decode(errors="surrogateescape").splitlines():
             line = line.split("#")[0].strip()
             if not line:
                 continue