[test] Add mksnapshot stress test suite

tools/testrunner/local/utils.py

Index: tools/testrunner/local/utils.py
diff --git a/tools/testrunner/local/utils.py b/tools/testrunner/local/utils.py
index 3e79e44afa22bff5fb623d1cb5451b5d9cf04b81..d780000bd4f69904cf6ba26e50921894ded34d70 100644
--- a/tools/testrunner/local/utils.py
+++ b/tools/testrunner/local/utils.py
@@ -31,6 +31,7 @@ from os.path import exists
 from os.path import isdir
 from os.path import join
 import platform
+import random
 import re
 import subprocess
 import urllib2
@@ -40,6 +41,13 @@ def GetSuitePaths(test_root):
   return [ f for f in os.listdir(test_root) if isdir(join(test_root, f)) ]
 
 
+def RandomSeed():
+  seed = 0
+  while not seed:
+    seed = random.SystemRandom().randint(-2147483648, 2147483647)
+  return seed
+
+
 # Reads a file into an array of strings
 def ReadLinesFrom(name):
   lines = []