tests: change default "ping" delay to 0.5s (instead of 1s) in expectXxx methods

State changes are detect earlier with lower values and speed the test suite.
However, this is a hack and too small values would waste CPU.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@2673 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/tests/functional/__init__.py

@@ -494,7 +494,7 @@ class NEOCluster(object):
             current_try = None
         return current_try
 
-    def expectCondition(self, condition, timeout=0, delay=1, on_fail=None):
+    def expectCondition(self, condition, timeout=0, delay=.5, on_fail=None):
         end = time.time() + timeout + DELAY_SAFETY_MARGIN
         opaque = None
         opaque_history = []