VOL-2103 - Device reason update modifications

A new api is defined to update the reason attribute of Device in rw_core.

Change-Id: Icc4134498fc622d67d8e8b6f6d08f0968a8e9bd2
diff --git a/go.sum b/go.sum
index 60cb314..58978ba 100644
--- a/go.sum
+++ b/go.sum
@@ -192,8 +192,8 @@
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