port statistics missing

This bug is to track failures in CI.

https://jenkins.opendaylight.org/releng/view/openflowplugin/job/openflowplugin-csit-1node-cds-flow-services-all-master/

This is a test with AD-SAL

Port statistics are not given in response to this API:

/controller/nb/v2/statistics/default/port

The result looks like this:

{"portStatistics":[{"node":

{"id":"00:00:00:00:00:00:00:02","type":"OF"}

,"portStatistic":[]},{"node":

{"id":"00:00:00:00:00:00:00:03","type":"OF"}

,"portStatistic":[]},{"node":

{"id":"00:00:00:00:00:00:00:01","type":"OF"}

,"portStatistic":[]}]}

The result used to look like this:

{"portStatistics":[{"node":

{"id":"00:00:00:00:00:00:00:02","type":"OF"}

,"portStatistic":[{"nodeConnector":{"node":

{"id":"00:00:00:00:00:00:00:02","type":"OF"}

,"id":"3","type":"OF"},"receivePackets":4,"transmitPackets":2,"receiveBytes":274,"transmitBytes":126,"receiveDrops":0,"transmitDrops":0,"receiveErrors":0,"transmitErrors":0,"receiveFrameError":0,"receiveOverRunError":0,"receiveCrcError":0,"collisionCount":0},{"nodeConnector":{"node":

{"id":"00:00:00:00:00:00:00:02","type":"OF"}

,"id":"1","type":"OF"},"receivePackets":2,"transmitPackets":0,"receiveBytes":140,"transmitBytes":0,"receiveDrops":0,"transmitDrops":0,"receiveErrors":0,"transmitErrors":0,"receiveFrameError":0,"receiveOverRunError":0,"receiveCrcError":0,"collisionCount":0},{"nodeConnector":{"node":

{"id":"00:00:00:00:00:00:00:02","type":"OF"}

,"id":"2","type":"OF"},"receivePackets":2,"transmitPackets":2,"receiveBytes":148,"transmitBytes":126,"receiveDrops":0,"transmitDrops":0,"receiveErrors":0,"transmitErrors":0,"receiveFrameError":0,"receiveOverRunError":0,"receiveCrcError":0,"collisionCount":0},{"nodeConnector":{"node":

{"id":"00:00:00:00:00:00:00:02","type":"OF"}

,"id":"0","type":"SW"},"receivePackets":5,"transmitPackets":0,"receiveBytes":398,"transmitBytes":0,"receiveDrops":0,"transmitDrops":0,"receiveErrors":0,"transmitErrors":0,"receiveFrameError":0,"receiveOverRunError":0,"receiveCrcError":0,"collisionCount":0}]},{"node":

{"id":"00:00:00:00:00:00:00:03","type":"OF"}

,"portStatistic":[{"nodeConnector":{"node":

{"id":"00:00:00:00:00:00:00:03","type":"OF"}

,"id":"3","type":"OF"},"receivePackets":2,"transmitPackets":1,"receiveBytes":148,"transmitBytes":63,"receiveDrops":0,"transmitDrops":0,"receiveErrors":0,"transmitErrors":0,"receiveFrameError":0,"receiveOverRunError":0,"receiveCrcError":0,"collisionCount":0},{"nodeConnector":{"node":

{"id":"00:00:00:00:00:00:00:03","type":"OF"}

,"id":"1","type":"OF"},"receivePackets":3,"transmitPackets":1,"receiveBytes":230,"transmitBytes":63,"receiveDrops":0,"transmitDrops":0,"receiveErrors":0,"transmitErrors":0,"receiveFrameError":0,"receiveOverRunError":0,"receiveCrcError":0,"collisionCount":0},{"nodeConnector":{"node":

{"id":"00:00:00:00:00:00:00:03","type":"OF"}

,"id":"2","type":"OF"},"receivePackets":2,"transmitPackets":1,"receiveBytes":148,"transmitBytes":63,"receiveDrops":0,"transmitDrops":0,"receiveErrors":0,"transmitErrors":0,"receiveFrameError":0,"receiveOverRunError":0,"receiveCrcError":0,"collisionCount":0},{"nodeConnector":{"node":

{"id":"00:00:00:00:00:00:00:03","type":"OF"}

,"id":"0","type":"SW"},"receivePackets":4,"transmitPackets":0,"receiveBytes":328,"transmitBytes":0,"receiveDrops":0,"transmitDrops":0,"receiveErrors":0,"transmitErrors":0,"receiveFrameError":0,"receiveOverRunError":0,"receiveCrcError":0,"collisionCount":0}]},{"node":

{"id":"00:00:00:00:00:00:00:01","type":"OF"}

,"portStatistic":[{"nodeConnector":{"node":

{"id":"00:00:00:00:00:00:00:01","type":"OF"}

,"id":"1","type":"OF"},"receivePackets":4,"transmitPackets":3,"receiveBytes":274,"transmitBytes":189,"receiveDrops":0,"transmitDrops":0,"receiveErrors":0,"transmitErrors":0,"receiveFrameError":0,"receiveOverRunError":0,"receiveCrcError":0,"collisionCount":0},{"nodeConnector":{"node":

{"id":"00:00:00:00:00:00:00:01","type":"OF"}

,"id":"2","type":"OF"},"receivePackets":5,"transmitPackets":3,"receiveBytes":364,"transmitBytes":189,"receiveDrops":0,"transmitDrops":0,"receiveErrors":0,"transmitErrors":0,"receiveFrameError":0,"receiveOverRunError":0,"receiveCrcError":0,"collisionCount":0},{"nodeConnector":{"node":

{"id":"00:00:00:00:00:00:00:01","type":"OF"}

,"id":"0","type":"SW"},"receivePackets":5,"transmitPackets":0,"receiveBytes":398,"transmitBytes":0,"receiveDrops":0,"transmitDrops":0,"receiveErrors":0,"transmitErrors":0,"receiveFrameError":0,"receiveOverRunError":0,"receiveCrcError":0,"collisionCount":0}]}]}