expose storage health metric value in bytes

Fix logic to expose storage health metric in bytes rather than KiB.

Change-Id: Ie8b5c1953076a4d1c7795836e64d871c80a59043
Signed-off-by: Jagpal Singh Gill <paligill@gmail.com>
diff --git a/health_metric_collection.cpp b/health_metric_collection.cpp
index 1fc0757..2aa0ea2 100644
--- a/health_metric_collection.cpp
+++ b/health_metric_collection.cpp
@@ -180,8 +180,8 @@
                   strerror(e), "PATH", config.path);
             continue;
         }
-        double total = buffer.f_blocks * (buffer.f_frsize / 1024);
-        double available = buffer.f_bfree * (buffer.f_frsize / 1024);
+        double total = buffer.f_blocks * buffer.f_frsize;
+        double available = buffer.f_bfree * buffer.f_frsize;
         double availablePercent = ((available / total) * 100);
 
         debug("Storage Metric {SUBTYPE}: {TOTAL} {AVAIL} {AVAIL_PERCENT}",