timeout: two decimals are enough for printing out the timeout duration

git-svn-id: https://svn.apache.org/repos/asf/incubator/tashi/trunk@1363568 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/tashi/utils/timeout.py b/src/tashi/utils/timeout.py
index cc9d850..45e98cc 100644
--- a/src/tashi/utils/timeout.py
+++ b/src/tashi/utils/timeout.py
@@ -50,7 +50,7 @@
 		if finished:
 			return rval
 		else: # NOTE: timeout must be set for this to be true.
-			raise TimeoutException("function %s timed out after %f seconds" % (str(self.function), timeout))
+			raise TimeoutException("function %s timed out after %.2f seconds" % (str(self.function), timeout))
 
 	def run(self):
 		try: