fix get compute list via rest api, without datacenter specified
diff --git a/src/emuvim/api/rest/compute.py b/src/emuvim/api/rest/compute.py
index 9f0516b..1082a4d 100755
--- a/src/emuvim/api/rest/compute.py
+++ b/src/emuvim/api/rest/compute.py
@@ -106,10 +106,10 @@
 
     global dcs
 
-    def get(self, dc_label):
+    def get(self, dc_label=None):
         logging.debug("API CALL: compute list")
         try:
-            if dc_label == 'None':
+            if dc_label is None:
                 # return list with all compute nodes in all DCs
                 all_containers = []
                 for dc in dcs.itervalues():
diff --git a/src/emuvim/api/rest/network.py b/src/emuvim/api/rest/network.py
index e3945b0..83fbde7 100755
--- a/src/emuvim/api/rest/network.py
+++ b/src/emuvim/api/rest/network.py
@@ -53,6 +53,7 @@
     :param match: OpenFlow match format of the flow entry
     :param bidirectional: boolean value if the link needs to be implemented from src to dst and back
     :param cookie: cookie value, identifier of the flow entry to be installed.
+    :param priority: integer indicating the priority of the flow entry
     :return: message string indicating if the chain action is succesful or not
     """
 
diff --git a/src/emuvim/api/rest/rest_api_endpoint.py b/src/emuvim/api/rest/rest_api_endpoint.py
index 536ed7a..51b58cb 100755
--- a/src/emuvim/api/rest/rest_api_endpoint.py
+++ b/src/emuvim/api/rest/rest_api_endpoint.py
@@ -62,7 +62,9 @@
         self.api = Api(self.app)
 
         # setup endpoints
-        self.api.add_resource(ComputeList, "/restapi/compute/<dc_label>")
+        self.api.add_resource(ComputeList,
+                              "/restapi/compute",
+                              "/restapi/compute/<dc_label>")
         self.api.add_resource(ComputeStart, "/restapi/compute/<dc_label>/<compute_name>/start")
         self.api.add_resource(ComputeStop, "/restapi/compute/<dc_label>/<compute_name>/stop")
         self.api.add_resource(ComputeStatus, "/restapi/compute/<dc_label>/<compute_name>")