NEM sets ONU Device as DISABLE with no apparent reason

In repeated builds sometimes NEM sets the ONU Device admin state to DISABLE even if the ONU is in the whitelist.

 How to reproduce:

• from a running system remove the OLT
• provision the OLT again

What is it happening?

• ONOS keeps track of the logical device and its ports when the OLT goes offline
• when the OLT comes back online it has no ONUs attached (they are still going through the OMCI state machine)
• ONOS thinks the port is gone and send an event on kafka
• NEM disables the ONU in VOLTHA

How to fix it:

• Ignore onu.events with admin_state=DISABLED if we have no ATTWorkflowServiceInstance for that device (that means that the device is new and the event is due to previous state)

Information from ONOS when OLT/ONU was removed from voltha after a successful activation

=============================================================

onos> devices
id=of:000000000ac014ce, available=false, local-status=disconnected 8m28s ago, role=NONE, type=SWITCH, mfr=VOLTHA Project, hw=, sw=, serial=EC1838000853, chassis=ac014ce, driver=voltha, chann
elId=10.233.75.18:58404, locType=none, managementAddress=10.233.75.18, name=olt-1, protocol=OF_13
id=of:0000cc37ab5b6da8, available=true, local-status=connected 4h20m ago, role=MASTER, type=SWITCH, mfr=Accton Corp., hw=x86-64-accton-as6712-32x-r0, sw=ofdpa 3.0.5.5+accton1.7-1, serial=671
232X1534021, chassis=cc37ab5b6da8, driver=ofdpa3, channelId=10.233.102.128:53381, locType=none, managementAddress=10.233.102.128, name=Fabric Switch - 1, protocol=OF_13
onos> ports -e
id=of:000000000ac014ce, available=false, local-status=disconnected 8m39s ago, role=NONE, type=SWITCH, mfr=VOLTHA Project, hw=, sw=, serial=EC1838000853, chassis=ac014ce, driver=voltha, chann
elId=10.233.75.18:58404, locType=none, managementAddress=10.233.75.18, name=olt-1, protocol=OF_13
id=of:0000cc37ab5b6da8, available=true, local-status=connected 4h20m ago, role=MASTER, type=SWITCH, mfr=Accton Corp., hw=x86-64-accton-as6712-32x-r0, sw=ofdpa 3.0.5.5+accton1.7-1, serial=671
232X1534021, chassis=cc37ab5b6da8, driver=ofdpa3, channelId=10.233.102.128:53381, locType=none, managementAddress=10.233.102.128, name=Fabric Switch - 1, protocol=OF_13
port=1, state=enabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port1
port=2, state=enabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port2
port=3, state=enabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port3
port=7, state=enabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port7
port=8, state=enabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port8
port=9, state=enabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port9
onos> ports
id=of:000000000ac014ce, available=false, local-status=disconnected 8m46s ago, role=NONE, type=SWITCH, mfr=VOLTHA Project, hw=, sw=, serial=EC1838000853, chassis=ac014ce, driver=voltha, channelId=10.233.75.18:58404, locType=none, managementAddress=10.233.75.18, name=olt-1, protocol=OF_13
port=16, state=disabled, type=fiber, speed=0 , adminState=enabled, portMac=08:00:00:00:00:10, portName=ALPHe3d1cfa7
port=65536, state=disabled, type=fiber, speed=0 , adminState=enabled, portMac=00:00:00:01:00:00, portName=nni-65536
id=of:0000cc37ab5b6da8, available=true, local-status=connected 4h20m ago, role=MASTER, type=SWITCH, mfr=Accton Corp., hw=x86-64-accton-as6712-32x-r0, sw=ofdpa 3.0.5.5+accton1.7-1, serial=671232X1534021, chassis=cc37ab5b6da8, driver=ofdpa3, channelId=10.233.102.128:53381, locType=none, managementAddress=10.233.102.128, name=Fabric Switch - 1, protocol=OF_13
port=1, state=enabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port1
port=2, state=enabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port2
port=3, state=enabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port3
port=4, state=disabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port4
port=5, state=disabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port5
port=6, state=disabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port6
port=7, state=enabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port7
port=8, state=enabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port8
port=9, state=enabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port9
port=10, state=disabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port10
port=11, state=disabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port11
port=12, state=disabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port12
port=13, state=disabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port13
port=14, state=disabled, type=fiber, speed=40000 , adminState=enabled, portMac=cc:37:ab:5b:6d:a9, portName=port14