Upgrade pip in the venv when we build it.
Upgrade pip in the venv when we build it.

Change-Id: I924975170c9e3a1ef23b5195cb3a6eed675ec043

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