Move log statement to expose actually info_cache value
Move log statement to expose actually info_cache value

When debugging an info_cache issue I noticed the logs  display:

"Updating cache with info: None update_instance_cache_with_nw_info"

Though we are not actually updating the info_cache with None as if
nw_info is not isinstance(NetworkInfo we fetch the latest nw_info
from neturon. This patch just moves the log statement so the actual
value is exposed.

Change-Id: I3a74191c31a053682bb2558c59228025ceb0cf28
Closes-bug: 1292298

tianweizhang/nova,openstack/nova,JioCloud/nova_test_latest,jianghuaw/nova,alexandrucoman/vbox-nova-driver,TwinkleChawla/nova,edulramirez/nova,tanglei528/nova,mmnelemane/nova,mikalstill/nova,JioCloud/nova,akash1808/nova,devendermishrajio/nova,rajalokan/nova,yatinkumbhare/openstack-nova,TwinkleChawla/nova,adelina-t/nova,maelnor/nova,rajalokan/nova,gooddata/openstack-nova,bigswitch/nova,mahak/nova,zzicewind/nova,joker946/nova,Juniper/nova,angdraug/nova,rahulunair/nova,zhimin711/nova,apporc/nova,noironetworks/nova,sebrandon1/nova,cloudbase/nova-virtualbox,double12gzh/nova,vmturbo/nova,badock/nova,Francis-Liu/animated-broccoli,ruslanloman/nova,bigswitch/nova,phenoxim/nova,cernops/nova,redhat-openstack/nova,varunarya10/nova_test_latest,eonpatapon/nova,cernops/nova,tudorvio/nova,NeCTAR-RC/nova,whitepages/nova,jeffrey4l/nova,silenceli/nova,eayunstack/nova,CiscoSystems/nova,vmturbo/nova,edulramirez/nova,affo/nova,scripnichenko/nova,Stavitsky/nova,bgxavier/nova,mandeepdhami/nova,vladikr/nova_drafts,saleemjaveds/https-github.com-openstack-nova,CCI-MOC/nova,BeyondTheClouds/nova,NeCTAR-RC/nova,hanlind/nova,CEG-FYP-OpenStack/scheduler,orbitfp7/nova,shail2810/nova,mahak/nova,eayunstack/nova,tealover/nova,jeffrey4l/nova,Francis-Liu/animated-broccoli,mgagne/nova,Yusuke1987/openstack_template,mmnelemane/nova,orbitfp7/nova,vmturbo/nova,Juniper/nova,spring-week-topos/nova-week,badock/nova,shail2810/nova,takeshineshiro/nova,vladikr/nova_drafts,cernops/nova,rajalokan/nova,JioCloud/nova_test_latest,cloudbase/nova,hanlind/nova,isyippee/nova,fnordahl/nova,j-carpentier/nova,apporc/nova,akash1808/nova_test_latest,watonyweng/nova,leilihh/novaha,mgagne/nova,thomasem/nova,openstack/nova,silenceli/nova,raildo/nova,CloudServer/nova,eharney/nova,mikalstill/nova,yatinkumbhare/openstack-nova,BeyondTheClouds/nova,gooddata/openstack-nova,bgxavier/nova,CloudServer/nova,j-carpentier/nova,tangfeixiong/nova,nikesh-mahalka/nova,nikesh-mahalka/nova,viggates/nova,cloudbase/nova,alaski/nova,watonyweng/nova,iuliat/nova,devendermishrajio/nova_test_latest,CEG-FYP-OpenStack/scheduler,hanlind/nova,whitepages/nova,iuliat/nova,Juniper/nova,cyx1231st/nova,cloudbase/nova,zhimin711/nova,eharney/nova,takeshineshiro/nova,openstack/nova,rahulunair/nova,MountainWei/nova,isyippee/nova,jianghuaw/nova,alaski/nova,saleemjaveds/https-github.com-openstack-nova,gooddata/openstack-nova,klmitch/nova,tanglei528/nova,kimjaejoong/nova,leilihh/nova,phenoxim/nova,mikalstill/nova,redhat-openstack/nova,ruslanloman/nova,klmitch/nova,petrutlucian94/nova,felixma/nova,double12gzh/nova,berrange/nova,tangfeixiong/nova,tealover/nova,JioCloud/nova,JianyuWang/nova,barnsnake351/nova,MountainWei/nova,mandeepdhami/nova,devendermishrajio/nova,raildo/nova,JianyuWang/nova,kimjaejoong/nova,Metaswitch/calico-nova,spring-week-topos/nova-week,klmitch/nova,alvarolopez/nova,rajalokan/nova,leilihh/novaha,jianghuaw/nova,virtualopensystems/nova,gooddata/openstack-nova,zaina/nova,felixma/nova,sebrandon1/nova,Metaswitch/calico-nova,angdraug/nova,eonpatapon/nova,Tehsmash/nova,alvarolopez/nova,yosshy/nova,fnordahl/nova,viggates/nova,cloudbase/nova-virtualbox,CiscoSystems/nova,devendermishrajio/nova_test_latest,zzicewind/nova,petrutlucian94/nova,sebrandon1/nova,varunarya10/nova_test_latest,belmiromoreira/nova,berrange/nova,Yusuke1987/openstack_template,tudorvio/nova,vmturbo/nova,ted-gould/nova,akash1808/nova_test_latest,LoHChina/nova,klmitch/nova,leilihh/nova,zaina/nova,tianweizhang/nova,joker946/nova,projectcalico/calico-nova,dawnpower/nova,belmiromoreira/nova,virtualopensystems/nova,projectcalico/calico-nova,jianghuaw/nova,BeyondTheClouds/nova,rahulunair/nova,akash1808/nova,Stavitsky/nova,CCI-MOC/nova,luogangyi/bcec-nova,shahar-stratoscale/nova,LoHChina/nova,blueboxgroup/nova,luogangyi/bcec-nova,alexandrucoman/vbox-nova-driver,ted-gould/nova,dawnpower/nova,Juniper/nova,Tehsmash/nova,thomasem/nova,scripnichenko/nova,blueboxgroup/nova,noironetworks/nova,dims/nova,barnsnake351/nova,dims/nova,maelnor/nova,cyx1231st/nova,shahar-stratoscale/nova,affo/nova,yosshy/nova,adelina-t/nova,mahak/nova