robot-results-parser: change case pass/fail

Signed-off-by: Naresh Kamboju <naresh.kamboju@linaro.org>
diff --git a/robot-results-parser.py b/robot-results-parser.py
index af394f8..a5fe6d1 100755
--- a/robot-results-parser.py
+++ b/robot-results-parser.py
@@ -32,7 +32,7 @@
         for stat in suite.findall('stat'):
             name = stat.get('name')
             if '1' == stat.get('pass'):
-               status = 'PASS'
+               status = 'pass'
             else:
-               status = 'FAIL'
+               status = 'fail'
             print name, ":", status