A couple of grammar fixes in help strings
A couple of grammar fixes in help strings

It fixes:
- Lack of number agreement,
- lack of the definite article 'the'.

Change-Id: I8d71e82ac93883ec19cb72e934ef29cc73fd6bc1
Signed-off-by: Antoni Segura Puimedon <532ff71c0f0c138e61afd0c77279be9f5bb6c4f0@midokura.com>

gooddata/openstack-nova,iuliat/nova,akash1808/nova,hanlind/nova,mahak/nova,petrutlucian94/nova,adelina-t/nova,eonpatapon/nova,bgxavier/nova,JioCloud/nova_test_latest,belmiromoreira/nova,MountainWei/nova,CCI-MOC/nova,dawnpower/nova,edulramirez/nova,apporc/nova,kimjaejoong/nova,NeCTAR-RC/nova,sebrandon1/nova,hanlind/nova,eonpatapon/nova,yatinkumbhare/openstack-nova,klmitch/nova,isyippee/nova,rajalokan/nova,BeyondTheClouds/nova,cernops/nova,akash1808/nova_test_latest,CloudServer/nova,nikesh-mahalka/nova,rahulunair/nova,devendermishrajio/nova,Francis-Liu/animated-broccoli,ruslanloman/nova,zaina/nova,bigswitch/nova,Tehsmash/nova,alvarolopez/nova,NeCTAR-RC/nova,double12gzh/nova,JioCloud/nova_test_latest,rajalokan/nova,blueboxgroup/nova,gooddata/openstack-nova,yatinkumbhare/openstack-nova,CloudServer/nova,jianghuaw/nova,alvarolopez/nova,alaski/nova,openstack/nova,thomasem/nova,cernops/nova,dawnpower/nova,scripnichenko/nova,vmturbo/nova,dims/nova,cyx1231st/nova,Juniper/nova,openstack/nova,belmiromoreira/nova,barnsnake351/nova,double12gzh/nova,watonyweng/nova,whitepages/nova,raildo/nova,thomasem/nova,blueboxgroup/nova,Yusuke1987/openstack_template,yosshy/nova,cloudbase/nova,devendermishrajio/nova_test_latest,alaski/nova,noironetworks/nova,vmturbo/nova,ruslanloman/nova,shail2810/nova,Yusuke1987/openstack_template,LoHChina/nova,alexandrucoman/vbox-nova-driver,edulramirez/nova,j-carpentier/nova,mmnelemane/nova,fnordahl/nova,JianyuWang/nova,akash1808/nova,felixma/nova,noironetworks/nova,rahulunair/nova,LoHChina/nova,apporc/nova,JioCloud/nova,BeyondTheClouds/nova,klmitch/nova,akash1808/nova_test_latest,watonyweng/nova,tealover/nova,zaina/nova,phenoxim/nova,tealover/nova,jianghuaw/nova,Stavitsky/nova,devendermishrajio/nova,zzicewind/nova,devendermishrajio/nova_test_latest,Juniper/nova,JianyuWang/nova,kimjaejoong/nova,cloudbase/nova-virtualbox,mmnelemane/nova,jianghuaw/nova,TwinkleChawla/nova,rajalokan/nova,cloudbase/nova,CEG-FYP-OpenStack/scheduler,tudorvio/nova,mandeepdhami/nova,raildo/nova,CEG-FYP-OpenStack/scheduler,felixma/nova,jeffrey4l/nova,ted-gould/nova,isyippee/nova,gooddata/openstack-nova,Tehsmash/nova,tangfeixiong/nova,adelina-t/nova,bigswitch/nova,cernops/nova,mikalstill/nova,joker946/nova,rahulunair/nova,tangfeixiong/nova,zzicewind/nova,Juniper/nova,rajalokan/nova,yosshy/nova,mandeepdhami/nova,MountainWei/nova,takeshineshiro/nova,cloudbase/nova-virtualbox,sebrandon1/nova,hanlind/nova,bgxavier/nova,nikesh-mahalka/nova,iuliat/nova,BeyondTheClouds/nova,Stavitsky/nova,Francis-Liu/animated-broccoli,sebrandon1/nova,openstack/nova,CCI-MOC/nova,scripnichenko/nova,alexandrucoman/vbox-nova-driver,cloudbase/nova,whitepages/nova,j-carpentier/nova,varunarya10/nova_test_latest,cyx1231st/nova,tudorvio/nova,mahak/nova,gooddata/openstack-nova,takeshineshiro/nova,phenoxim/nova,vmturbo/nova,petrutlucian94/nova,mahak/nova,jianghuaw/nova,fnordahl/nova,jeffrey4l/nova,Juniper/nova,zhimin711/nova,shail2810/nova,klmitch/nova,joker946/nova,klmitch/nova,vmturbo/nova,ted-gould/nova,mikalstill/nova,JioCloud/nova,varunarya10/nova_test_latest,TwinkleChawla/nova,mikalstill/nova,dims/nova,barnsnake351/nova,zhimin711/nova