[GCU] protect loopback0 from deletion #2813
Merged
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Fix conflict and backport (#2638) to 202205.
What I did
Refer to sonic-net/sonic-buildimage#11171, protect loopback0 from deletion
How I did it
Add patch checker to fail the validation when remove loopback0
How to verify it
Unit test
What I did
How I did it
How to verify it
Previous command output (if the output of a command-line utility has changed)
New command output (if the output of a command-line utility has changed)