tree b1a002ae85874160e263c9214fe177608a11632c
parent 7fba877401c7d224611b61908705d156a240c300
author sdn <donghyeok.ho@samsung.com> 1528800095 +0900
committer Yuta HIGUCHI <y-higuchi@opennetworking.org> 1528862197 +0000

add logs in VtnManager to avoid return null silently

ONOS-7714

Change-Id: I22e86b8875581253eea83d2865bf7a7b33e5fe08