VMware: cleanup the constructors of the compute drivers
VMware: cleanup the constructors of the compute drivers

The 'read_only' parameter was never used by the compute drivers.
The 'scheme' parameter should be passed to the base constructor.

Change-Id: I3abd40a50896664ee274f057ded8ec2460679c82

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