Modify list_system_health_stories to generate_system_health_csv

tools/perf/generate_system_health_csv

Index: tools/perf/generate_system_health_csv
diff --git a/tools/perf/list_system_health_stories b/tools/perf/generate_system_health_csv
similarity index 59%
rename from tools/perf/list_system_health_stories
rename to tools/perf/generate_system_health_csv
index cfc494a279c08fb54c03514ac3d00273cdb10c7d..aa1c079f5c5daa34fa178d1b9ae396a79d217507 100755
--- a/tools/perf/list_system_health_stories
+++ b/tools/perf/generate_system_health_csv
@@ -3,6 +3,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import csv
+import os
 import sys
 
 from core import path_util
@@ -18,19 +20,24 @@ def IterAllSystemHealthStories():
     if len(s.SUPPORTED_PLATFORMS) < 2:
       yield s
 
+SYSTEM_HEALTH_CSV = os.path.join(os.path.dirname(__file__),
+                                 'system_health_stories.csv')
+
 
 def main():
   system_health_stories = list(IterAllSystemHealthStories())
   system_health_stories.sort(key=lambda s: s.name)
-  print '{0:60} {1}'.format('Story name', 'Supported platform')
-  print '-' * 79
-  for s in system_health_stories:
-    p = s.SUPPORTED_PLATFORMS
-    if len(p) == 2:
-      p = 'all'
-    else:
-      p = list(p)[0]
-    print '{0:60} {1}'.format(s.name, p)
+  with open(SYSTEM_HEALTH_CSV, 'w') as f:
+    csv_writer = csv.writer(f)
+    csv_writer.writerow([
+        'Story name', 'Platform', 'Description'])
+    for s in system_health_stories:
+      p = s.SUPPORTED_PLATFORMS
+      if len(p) == 2:
+        p = 'all'
+      else:
+        p = list(p)[0]
+      csv_writer.writerow([s.name, p, s.GetStoryDescription()])
   return 0