Add function for onos cli command 'Device-role'

    Also add some FIXME's to topo comparison functions
diff --git a/TestON/drivers/common/cli/emulator/mininetclidriver.py b/TestON/drivers/common/cli/emulator/mininetclidriver.py
index 419ee06..9875064 100644
--- a/TestON/drivers/common/cli/emulator/mininetclidriver.py
+++ b/TestON/drivers/common/cli/emulator/mininetclidriver.py
@@ -866,6 +866,7 @@
             2. numpy - "sudo pip install numpy"
 
         '''
+        #FIXME: this does not look for extra ports in ONOS, only checks that ONOS has what is in MN
         import json
         from numpy import uint64
         port_results = main.TRUE
@@ -932,6 +933,7 @@
         This uses the sts TestONTopology object
 
         '''
+        #FIXME: this does not look for extra links in ONOS, only checks that ONOS has what is in MN
         import json
         link_results = main.TRUE
         output = {"switches":[]}