Remove action-args from nova-manage help
Remove action-args from nova-manage help

During help [action_args [action_args ...]] could be
confusing for users

$ nova-manage network list -h
usage: nova-manage network list [-h]
         [action_args [action_args ...]]

Because of that action_args is set to "SUPPRESS" from the help

Change-Id: I0fdc480724d3b59a8eebb2d294f324441c5e46b2
Closes-Bug: #1260538

Juniper/nova,kimjaejoong/nova,cloudbase/nova,mahak/nova,whitepages/nova,devendermishrajio/nova,iuliat/nova,barnsnake351/nova,kimjaejoong/nova,Stavitsky/nova,rajalokan/nova,petrutlucian94/nova,openstack/nova,varunarya10/nova_test_latest,shail2810/nova,redhat-openstack/nova,felixma/nova,tianweizhang/nova,felixma/nova,whitepages/nova,JioCloud/nova_test_latest,saleemjaveds/https-github.com-openstack-nova,jeffrey4l/nova,thomasem/nova,CEG-FYP-OpenStack/scheduler,cyx1231st/nova,edulramirez/nova,devendermishrajio/nova_test_latest,yatinkumbhare/openstack-nova,openstack/nova,Juniper/nova,zaina/nova,eayunstack/nova,yosshy/nova,badock/nova,Tehsmash/nova,virtualopensystems/nova,mahak/nova,klmitch/nova,bigswitch/nova,noironetworks/nova,affo/nova,sebrandon1/nova,CCI-MOC/nova,CEG-FYP-OpenStack/scheduler,Metaswitch/calico-nova,projectcalico/calico-nova,cloudbase/nova,hanlind/nova,rajalokan/nova,tealover/nova,zzicewind/nova,angdraug/nova,silenceli/nova,zaina/nova,edulramirez/nova,jeffrey4l/nova,rajalokan/nova,berrange/nova,rahulunair/nova,dims/nova,badock/nova,phenoxim/nova,affo/nova,tudorvio/nova,scripnichenko/nova,watonyweng/nova,jianghuaw/nova,redhat-openstack/nova,JioCloud/nova_test_latest,cloudbase/nova,Tehsmash/nova,tanglei528/nova,phenoxim/nova,joker946/nova,apporc/nova,Francis-Liu/animated-broccoli,CloudServer/nova,MountainWei/nova,ted-gould/nova,gooddata/openstack-nova,Juniper/nova,rahulunair/nova,akash1808/nova_test_latest,alvarolopez/nova,Juniper/nova,TwinkleChawla/nova,NeCTAR-RC/nova,mikalstill/nova,devendermishrajio/nova,klmitch/nova,zzicewind/nova,klmitch/nova,tealover/nova,alvarolopez/nova,hanlind/nova,mgagne/nova,eayunstack/nova,Francis-Liu/animated-broccoli,varunarya10/nova_test_latest,LoHChina/nova,belmiromoreira/nova,bigswitch/nova,takeshineshiro/nova,saleemjaveds/https-github.com-openstack-nova,yatinkumbhare/openstack-nova,nikesh-mahalka/nova,mmnelemane/nova,tangfeixiong/nova,akash1808/nova_test_latest,jianghuaw/nova,berrange/nova,fnordahl/nova,joker946/nova,BeyondTheClouds/nova,orbitfp7/nova,ruslanloman/nova,jianghuaw/nova,openstack/nova,adelina-t/nova,MountainWei/nova,double12gzh/nova,alaski/nova,LoHChina/nova,isyippee/nova,vladikr/nova_drafts,silenceli/nova,cernops/nova,j-carpentier/nova,BeyondTheClouds/nova,angdraug/nova,Yusuke1987/openstack_template,yosshy/nova,mandeepdhami/nova,akash1808/nova,tianweizhang/nova,ted-gould/nova,cloudbase/nova-virtualbox,mahak/nova,sebrandon1/nova,belmiromoreira/nova,hanlind/nova,eonpatapon/nova,viggates/nova,fnordahl/nova,virtualopensystems/nova,vmturbo/nova,gooddata/openstack-nova,jianghuaw/nova,alexandrucoman/vbox-nova-driver,eharney/nova,orbitfp7/nova,noironetworks/nova,dawnpower/nova,cloudbase/nova-virtualbox,devendermishrajio/nova_test_latest,CiscoSystems/nova,NeCTAR-RC/nova,tanglei528/nova,watonyweng/nova,rahulunair/nova,thomasem/nova,iuliat/nova,petrutlucian94/nova,rajalokan/nova,double12gzh/nova,gooddata/openstack-nova,mandeepdhami/nova,maelnor/nova,raildo/nova,CiscoSystems/nova,takeshineshiro/nova,ruslanloman/nova,viggates/nova,klmitch/nova,JianyuWang/nova,barnsnake351/nova,vmturbo/nova,alexandrucoman/vbox-nova-driver,blueboxgroup/nova,bgxavier/nova,gooddata/openstack-nova,alaski/nova,JioCloud/nova,mikalstill/nova,TwinkleChawla/nova,cyx1231st/nova,CCI-MOC/nova,nikesh-mahalka/nova,vmturbo/nova,Stavitsky/nova,tangfeixiong/nova,dawnpower/nova,tudorvio/nova,vladikr/nova_drafts,vmturbo/nova,isyippee/nova,Yusuke1987/openstack_template,cernops/nova,BeyondTheClouds/nova,adelina-t/nova,JioCloud/nova,eonpatapon/nova,akash1808/nova,dims/nova,mikalstill/nova,bgxavier/nova,CloudServer/nova,maelnor/nova,shail2810/nova,mmnelemane/nova,scripnichenko/nova,Metaswitch/calico-nova,j-carpentier/nova,raildo/nova,zhimin711/nova,eharney/nova,apporc/nova,blueboxgroup/nova,mgagne/nova,sebrandon1/nova,cernops/nova,JianyuWang/nova,projectcalico/calico-nova,zhimin711/nova