Minor refactor of servers viewbuider.
Minor refactor of servers viewbuider.

No need to construct the flavor link if we don't use it.

Change-Id: I6a06f865de71db1d99cd0fba43a27b753f3f50a4

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