default tox cmd should also run 'functional' target
default tox cmd should also run 'functional' target

The default tox cmd should also run the 'functional' target, this got
missed in adding that sub target.

Change-Id: I9a10b0c9798d9f90db03991c45b9f2b285d1e4d0

openstack/nova,adelina-t/nova,alaski/nova,apporc/nova,zhimin711/nova,tealover/nova,akash1808/nova_test_latest,vmturbo/nova,alaski/nova,kimjaejoong/nova,eonpatapon/nova,gooddata/openstack-nova,tangfeixiong/nova,isyippee/nova,gooddata/openstack-nova,Juniper/nova,blueboxgroup/nova,mmnelemane/nova,rajalokan/nova,kimjaejoong/nova,klmitch/nova,Stavitsky/nova,BeyondTheClouds/nova,sebrandon1/nova,hanlind/nova,jianghuaw/nova,varunarya10/nova_test_latest,isyippee/nova,gooddata/openstack-nova,ruslanloman/nova,Tehsmash/nova,Tehsmash/nova,felixma/nova,alvarolopez/nova,JioCloud/nova_test_latest,cernops/nova,fnordahl/nova,takeshineshiro/nova,bigswitch/nova,vmturbo/nova,takeshineshiro/nova,ruslanloman/nova,CCI-MOC/nova,cernops/nova,zaina/nova,alexandrucoman/vbox-nova-driver,raildo/nova,devendermishrajio/nova_test_latest,jianghuaw/nova,iuliat/nova,rajalokan/nova,akash1808/nova,rahulunair/nova,ted-gould/nova,sebrandon1/nova,edulramirez/nova,mandeepdhami/nova,felixma/nova,JioCloud/nova_test_latest,whitepages/nova,joker946/nova,sebrandon1/nova,j-carpentier/nova,Francis-Liu/animated-broccoli,BeyondTheClouds/nova,dims/nova,tudorvio/nova,CEG-FYP-OpenStack/scheduler,barnsnake351/nova,thomasem/nova,jeffrey4l/nova,watonyweng/nova,cloudbase/nova,yatinkumbhare/openstack-nova,noironetworks/nova,LoHChina/nova,CCI-MOC/nova,thomasem/nova,yosshy/nova,tudorvio/nova,ted-gould/nova,nikesh-mahalka/nova,shail2810/nova,klmitch/nova,JianyuWang/nova,dawnpower/nova,raildo/nova,cloudbase/nova,Stavitsky/nova,TwinkleChawla/nova,openstack/nova,dawnpower/nova,scripnichenko/nova,belmiromoreira/nova,fnordahl/nova,nikesh-mahalka/nova,Francis-Liu/animated-broccoli,joker946/nova,tealover/nova,varunarya10/nova_test_latest,rajalokan/nova,petrutlucian94/nova,alexandrucoman/vbox-nova-driver,j-carpentier/nova,apporc/nova,klmitch/nova,CEG-FYP-OpenStack/scheduler,belmiromoreira/nova,rahulunair/nova,mandeepdhami/nova,cloudbase/nova,NeCTAR-RC/nova,Juniper/nova,blueboxgroup/nova,devendermishrajio/nova,whitepages/nova,vmturbo/nova,mahak/nova,phenoxim/nova,JianyuWang/nova,barnsnake351/nova,mahak/nova,openstack/nova,cernops/nova,devendermishrajio/nova,mmnelemane/nova,cyx1231st/nova,noironetworks/nova,devendermishrajio/nova_test_latest,zzicewind/nova,petrutlucian94/nova,mikalstill/nova,CloudServer/nova,Juniper/nova,jianghuaw/nova,hanlind/nova,double12gzh/nova,JioCloud/nova,edulramirez/nova,jeffrey4l/nova,iuliat/nova,bigswitch/nova,bgxavier/nova,vmturbo/nova,NeCTAR-RC/nova,dims/nova,BeyondTheClouds/nova,zaina/nova,yosshy/nova,MountainWei/nova,yatinkumbhare/openstack-nova,jianghuaw/nova,scripnichenko/nova,rahulunair/nova,tangfeixiong/nova,LoHChina/nova,mikalstill/nova,rajalokan/nova,adelina-t/nova,akash1808/nova,bgxavier/nova,watonyweng/nova,cyx1231st/nova,hanlind/nova,eonpatapon/nova,mikalstill/nova,klmitch/nova,alvarolopez/nova,zzicewind/nova,akash1808/nova_test_latest,phenoxim/nova,zhimin711/nova,shail2810/nova,TwinkleChawla/nova,Juniper/nova,CloudServer/nova,MountainWei/nova,double12gzh/nova,JioCloud/nova,mahak/nova,gooddata/openstack-nova