configurations : harma: revise leak detector polarity to active low

Leak detection GPIO is active low in hardware design,
so revise the configuration polarity from active high
to active low accordingly.

Change-Id: I28903d95e454b3ab11d92a140bf3cdef318474d2
Signed-off-by: Peter Yin <peter.yin@quantatw.com>
diff --git a/configurations/meta/harma_scm.json b/configurations/meta/harma_scm.json
index d3a9601..5fbc86a 100644
--- a/configurations/meta/harma_scm.json
+++ b/configurations/meta/harma_scm.json
@@ -167,7 +167,7 @@
             "Level": "Critical",
             "Name": "ComputeBlade",
             "PinName": "leakage-detect-alert",
-            "Polarity": "High",
+            "Polarity": "Low",
             "SubType": "LeakSensingCable",
             "Type": "GPIOLeakDetector"
         },