Don't LOG.error on max_depth (by default).
Don't LOG.error on max_depth (by default).

Reverts part of 7b206ad which added an extra LOG.error
statement when max_depth is hit.

This is causing spurious errors to get logged when making
some Nova requests.

Fixes LP Bug #1140133

Change-Id: I0fff47d9c53c63345ae273a4d20a2bacb27f12e5

tealover/nova,qwefi/nova,noironetworks/nova,devendermishrajio/nova,thomasem/nova,whitepages/nova,belmiromoreira/nova,dstroppa/openstack-smartos-nova-grizzly,eonpatapon/nova,zhimin711/nova,nikesh-mahalka/nova,CEG-FYP-OpenStack/scheduler,raildo/nova,double12gzh/nova,alvarolopez/nova,saleemjaveds/https-github.com-openstack-nova,Yuriy-Leonov/nova,vladikr/nova_drafts,zhimin711/nova,tudorvio/nova,felixma/nova,tianweizhang/nova,qwefi/nova,Tehsmash/nova,NeCTAR-RC/nova,klmitch/nova,zaina/nova,adelina-t/nova,scripnichenko/nova,jianghuaw/nova,gooddata/openstack-nova,MountainWei/nova,yosshy/nova,sridevikoushik31/nova,affo/nova,watonyweng/nova,akash1808/nova_test_latest,jianghuaw/nova,akash1808/nova_test_latest,shootstar/novatest,Brocade-OpenSource/OpenStack-DNRM-Nova,hanlind/nova,hanlind/nova,takeshineshiro/nova,cloudbase/nova,Tehsmash/nova,jianghuaw/nova,luogangyi/bcec-nova,yatinkumbhare/openstack-nova,JioCloud/nova_test_latest,cloudbau/nova,iuliat/nova,bclau/nova,devoid/nova,double12gzh/nova,Yusuke1987/openstack_template,dawnpower/nova,mgagne/nova,eharney/nova,zzicewind/nova,orbitfp7/nova,tudorvio/nova,openstack/nova,SUSE-Cloud/nova,affo/nova,klmitch/nova,gspilio/nova,CiscoSystems/nova,adelina-t/nova,badock/nova,edulramirez/nova,mmnelemane/nova,mikalstill/nova,cloudbase/nova-virtualbox,citrix-openstack-build/nova,plumgrid/plumgrid-nova,alaski/nova,eonpatapon/nova,LoHChina/nova,Brocade-OpenSource/OpenStack-DNRM-Nova,NeCTAR-RC/nova,dims/nova,vmturbo/nova,bgxavier/nova,Juniper/nova,yosshy/nova,mahak/nova,Juniper/nova,Stavitsky/nova,takeshineshiro/nova,ntt-sic/nova,luogangyi/bcec-nova,rajalokan/nova,joker946/nova,projectcalico/calico-nova,akash1808/nova,barnsnake351/nova,yrobla/nova,gspilio/nova,mmnelemane/nova,apporc/nova,spring-week-topos/nova-week,viggates/nova,openstack/nova,Triv90/Nova,blueboxgroup/nova,thomasem/nova,JianyuWang/nova,mikalstill/nova,rajalokan/nova,belmiromoreira/nova,devendermishrajio/nova_test_latest,eayunstack/nova,jeffrey4l/nova,orbitfp7/nova,redhat-openstack/nova,zzicewind/nova,DirectXMan12/nova-hacking,alexandrucoman/vbox-nova-driver,tealover/nova,sridevikoushik31/openstack,mahak/nova,mahak/nova,sridevikoushik31/nova,Juniper/nova,Metaswitch/calico-nova,TieWei/nova,silenceli/nova,cyx1231st/nova,virtualopensystems/nova,virtualopensystems/nova,maheshp/novatest,rickerc/nova_audit,akash1808/nova,BeyondTheClouds/nova,maheshp/novatest,isyippee/nova,CloudServer/nova,kimjaejoong/nova,yatinkumbhare/openstack-nova,maheshp/novatest,petrutlucian94/nova_dev,shootstar/novatest,citrix-openstack-build/nova,sridevikoushik31/nova,nikesh-mahalka/nova,saleemjaveds/https-github.com-openstack-nova,shail2810/nova,BeyondTheClouds/nova,angdraug/nova,CCI-MOC/nova,devendermishrajio/nova,devoid/nova,petrutlucian94/nova_dev,cyx1231st/nova,yrobla/nova,cloudbau/nova,eayunstack/nova,felixma/nova,gspilio/nova,kimjaejoong/nova,apporc/nova,Triv90/Nova,leilihh/nova,CloudServer/nova,TieWei/nova,j-carpentier/nova,Metaswitch/calico-nova,alexandrucoman/vbox-nova-driver,redhat-openstack/nova,devendermishrajio/nova_test_latest,sacharya/nova,CCI-MOC/nova,Triv90/Nova,raildo/nova,Yuriy-Leonov/nova,dims/nova,scripnichenko/nova,jianghuaw/nova,fnordahl/nova,plumgrid/plumgrid-nova,petrutlucian94/nova,spring-week-topos/nova-week,zaina/nova,Francis-Liu/animated-broccoli,tangfeixiong/nova,gooddata/openstack-nova,DirectXMan12/nova-hacking,hanlind/nova,angdraug/nova,LoHChina/nova,klmitch/nova,leilihh/novaha,phenoxim/nova,JioCloud/nova_test_latest,ted-gould/nova,imsplitbit/nova,whitepages/nova,SUSE-Cloud/nova,ewindisch/nova,tanglei528/nova,JioCloud/nova,isyippee/nova,openstack/nova,leilihh/nova,imsplitbit/nova,berrange/nova,ted-gould/nova,maelnor/nova,blueboxgroup/nova,rrader/nova-docker-plugin,vmturbo/nova,berrange/nova,mandeepdhami/nova,jeffrey4l/nova,barnsnake351/nova,bclau/nova,sebrandon1/nova,alaski/nova,OpenAcademy-OpenStack/nova-scheduler,OpenAcademy-OpenStack/nova-scheduler,dstroppa/openstack-smartos-nova-grizzly,cernops/nova,DirectXMan12/nova-hacking,rickerc/nova_audit,ntt-sic/nova,gooddata/openstack-nova,noironetworks/nova,sacharya/nova,JioCloud/nova,iuliat/nova,alvarolopez/nova,dstroppa/openstack-smartos-nova-grizzly,bigswitch/nova,tianweizhang/nova,cloudbase/nova,Yusuke1987/openstack_template,sebrandon1/nova,petrutlucian94/nova,shahar-stratoscale/nova,joker946/nova,sridevikoushik31/openstack,j-carpentier/nova,rahulunair/nova,CEG-FYP-OpenStack/scheduler,rahulunair/nova,tanglei528/nova,rajalokan/nova,cernops/nova,sridevikoushik31/nova,varunarya10/nova_test_latest,bigswitch/nova,ewindisch/nova,cernops/nova,bgxavier/nova,mikalstill/nova,ruslanloman/nova,vmturbo/nova,cloudbase/nova-virtualbox,viggates/nova,fnordahl/nova,ruslanloman/nova,gooddata/openstack-nova,rrader/nova-docker-plugin,MountainWei/nova,klmitch/nova,projectcalico/calico-nova,TwinkleChawla/nova,CiscoSystems/nova,yrobla/nova,Stavitsky/nova,sridevikoushik31/openstack,rahulunair/nova,rajalokan/nova,BeyondTheClouds/nova,vmturbo/nova,badock/nova,maelnor/nova,Francis-Liu/animated-broccoli,shahar-stratoscale/nova,JianyuWang/nova,mgagne/nova,Juniper/nova,dawnpower/nova,mandeepdhami/nova,silenceli/nova,phenoxim/nova,tangfeixiong/nova,vladikr/nova_drafts,varunarya10/nova_test_latest,TwinkleChawla/nova,sebrandon1/nova,leilihh/novaha,cloudbase/nova,shail2810/nova,watonyweng/nova,eharney/nova,edulramirez/nova