Bug #13009 No gaps allowed in node id number sequence

+ some small bugfixes in ndb_config
+ extending ndb_config to print connections and take shm option

mysql-test/std_data/ndb_config_mycnf2.cnf

@@ -0,0 +1,31 @@
+#
+# Testing automatic node id generation
+#
+[cluster_config]
+NoOfReplicas=2
+Signum=39
+
+[cluster_config.cluster0]
+ndbd = localhost,localhost,localhost,localhost
+ndb_mgmd = localhost
+mysqld = ,,,,
+
+[cluster_config.cluster1]
+ndbd = localhost,localhost,localhost,localhost
+ndb_mgmd = localhost
+mysqld = ,,,,
+[cluster_config.ndbd.1.cluster1]
+NodeId=2
+[cluster_config.mysqld.1.cluster1]
+NodeId=1
+
+[cluster_config.cluster2]
+ndbd = localhost,localhost,localhost,localhost
+ndb_mgmd = localhost,localhost
+mysqld = ,,,,
+[cluster_config.mysqld.1.cluster2]
+NodeId=11
+[cluster_config.ndb_mgmd.1.cluster2]
+NodeId=1
+[cluster_config.ndbd.1.cluster2]
+NodeId=3