Testing: IP allocation simulation - rename an example to node_group_simple.py.

Signed-off-by: Martin Schwenke <martin@meltin.net>

(This used to be ctdb commit 0a2a5602233a8208e2729192e50d816faed0151a)

ctdb/tests/takeover/node_group_simple.py

@@ -0,0 +1,26 @@
+#!/usr/bin/env python
+
+# This example demonstrates a simple, sensible node group
+# configuration.  When run with deterministic IPs (use "-d" to show
+# the problem) it does many gratuitous IP reassignments.
+
+from ctdb_takeover import Cluster, Node, process_args
+
+process_args()
+
+addresses1 = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H']
+addresses2 = ['I', 'J', 'K']
+
+c = Cluster()
+
+for i in range(4):
+    c.add_node(Node(addresses1))
+
+for i in range(3):
+    c.add_node(Node(addresses2))
+
+c.add_node(Node([]))
+
+c.recover()
+
+c.random_iterations()