log_test: restore the original config

The original device config needs to be restored after the test is done.

Signed-off-by: Paul Gaiduk <paulg@zededa.com>

tests/lim/testdata/log_test.txt

@@ -12,13 +12,13 @@ exec sleep 15
 # ssh into EVE to force log creation
 exec -t 5m bash ssh.sh &
 
-# restore the original config
-eden -t 1m controller edge-node set-config --file /tmp/full-config.json
-
 # Trying to find messages about ssh in log
 {{$test1}} -out content 'content:.*Disconnected.*'
 stdout 'Disconnected from'
 
+# restore the original config
+eden -t 1m controller edge-node set-config --file /tmp/full-config.json
+
 # Test's config. file
 -- eden-config.yml --
 test: