ss_conf support for networks

Signed-off-by: Apollon Oikonomopoulos <apollon@noc.grnet.gr>
Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>
Reviewed-by: Iustin Pop <iustin@google.com>

lib/ssconf.py

@@ -297,6 +297,7 @@ class SimpleStore(object):
     constants.SS_MAINTAIN_NODE_HEALTH,
     constants.SS_UID_POOL,
     constants.SS_NODEGROUPS,
+    constants.SS_NETWORKS,
     )
   _MAX_SIZE = 131072
 
@@ -461,6 +462,14 @@ class SimpleStore(object):
     nl = data.splitlines(False)
     return nl
 
+  def GetNetworkList(self):
+    """Return the list of networks.
+
+    """
+    data = self._ReadFile(constants.SS_NETWORKS)
+    nl = data.splitlines(False)
+    return nl
+
   def GetClusterTags(self):
     """Return the cluster tags.