Decode nova-manage args into unicode.
Decode nova-manage args into unicode.

This improves handling of non-ASCII args... it's not
exactly a comprehensive solution, though.

Partial (demonstration) fix for bug 931667.

Change-Id: Icc2aabe9c0c521732003f7013438630ebc8d2238

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