xenapi: fix rootwrap
xenapi: fix rootwrap

The xenapi root wrapper did not parse the "exec_dirs" parameter, so it
failed to execute the commands. This patch works around this problem by
parsing the "exec_dirs".

Fixes bug 1185872

Change-Id: I10175c7df5d34e47eb6044711ffbe4fe4cee3ce2

skyddv/neutron,jerryz1982/neutron,blueboxgroup/neutron,vivekanand1101/neutron,jacknjzhou/neutron,jerryz1982/neutron,rdo-management/neutron,rickerc/neutron_audit,CiscoSystems/neutron,ntt-sic/neutron,miyakz1192/neutron,CiscoSystems/neutron,zhhf/charging,watonyweng/neutron,MaximNevrov/neutron,vbannai/neutron,takeshineshiro/neutron,wolverineav/neutron,blueboxgroup/neutron,Comcast/neutron,NeCTAR-RC/neutron,oeeagle/quantum,SmartInfrastructures/neutron,Comcast/neutron,netscaler/neutron,vijayendrabvs/ssl-neutron,glove747/liberty-neutron,armando-migliaccio/neutron,adelina-t/neutron,jacknjzhou/neutron,vijayendrabvs/ssl-neutron,chitr/neutron,sebrandon1/neutron,vijayendrabvs/hap,vijayendrabvs/ssl-neutron,Comcast/neutron,igor-toga/local-snat,javaos74/neutron,gopal1cloud/neutron,noironetworks/neutron,gkotton/neutron,igor-toga/local-snat,mahak/neutron,mandeepdhami/neutron,aristanetworks/neutron,eonpatapon/neutron,zhhf/charging,leeseuljeong/leeseulstack_neutron,vijayendrabvs/hap,shahbazn/neutron,leeseulstack/openstack,SmartInfrastructures/neutron,Brocade-OpenSource/OpenStack-DNRM-Neutron,neoareslinux/neutron,sasukeh/neutron,infobloxopen/neutron,Juniper/contrail-dev-neutron,dhanunjaya/neutron,cloudbase/neutron,bigswitch/neutron,kaiweifan/neutron,CiscoSystems/quantum,ykaneko/neutron,armando-migliaccio/neutron,CiscoSystems/quantum,SamYaple/neutron,aristanetworks/neutron,CiscoSystems/vespa,silenci/neutron,projectcalico/calico-neutron,virtualopensystems/neutron,pnavarro/neutron,cernops/neutron,netscaler/neutron,bgxavier/neutron,rickerc/neutron_audit,mahak/neutron,gkotton/neutron,citrix-openstack-build/neutron,vijayendrabvs/hap,mahak/neutron,vveerava/Openstack,armando-migliaccio/neutron,Juniper/neutron,antonioUnina/neutron,CiscoSystems/quantum,shahbazn/neutron,CiscoSystems/vespa,vveerava/Openstack,dims/neutron,barnsnake351/neutron,eonpatapon/neutron,sasukeh/neutron,vbannai/neutron,rdo-management/neutron,beagles/neutron_hacking,paninetworks/neutron,javaos74/neutron,mmnelemane/neutron,leeseulstack/openstack,paninetworks/neutron,Juniper/contrail-dev-neutron,yamahata/neutron,redhat-openstack/neutron,chitr/neutron,wenhuizhang/neutron,Stavitsky/neutron,JioCloud/neutron,SamYaple/neutron,Metaswitch/calico-neutron,noironetworks/neutron,apporc/neutron,yamahata/tacker,wenhuizhang/neutron,openstack/neutron,beagles/neutron_hacking,openstack/neutron,neoareslinux/neutron,Stavitsky/neutron,adelina-t/neutron,eayunstack/neutron,zhhf/charging,JioCloud/neutron,rickerc/neutron_audit,CiscoSystems/neutron,klmitch/neutron,gkotton/neutron,kaiweifan/neutron,dhanunjaya/neutron,blueboxgroup/neutron,sebrandon1/neutron,jumpojoy/neutron,ntt-sic/neutron,Metaswitch/calico-neutron,magic0704/neutron,antonioUnina/neutron,cloudbase/neutron-virtualbox,ykaneko/neutron,virtualopensystems/neutron,citrix-openstack-build/neutron,vivekanand1101/neutron,infobloxopen/neutron,MaximNevrov/neutron,silenci/neutron,sajuptpm/neutron-ipam,jumpojoy/neutron,mmnelemane/neutron,Juniper/contrail-dev-neutron,cisco-openstack/neutron,yamahata/neutron,wolverineav/neutron,cisco-openstack/neutron,JianyuWang/neutron,projectcalico/calico-neutron,swdream/neutron,bigswitch/neutron,apporc/neutron,yamahata/neutron,JianyuWang/neutron,cloudbase/neutron,pnavarro/neutron,dims/neutron,swdream/neutron,beagles/neutron_hacking,ntt-sic/neutron,redhat-openstack/neutron,waltBB/neutron_read,takeshineshiro/neutron,yamahata/tacker,mandeepdhami/neutron,mattt416/neutron,bgxavier/neutron,skyddv/neutron,asgard-lab/neutron,kaiweifan/neutron,watonyweng/neutron,Juniper/neutron,huntxu/neutron,ykaneko/neutron,vbannai/neutron,leeseulstack/openstack,suneeth51/neutron,yuewko/neutron,cloudbase/neutron-virtualbox,Brocade-OpenSource/OpenStack-DNRM-Neutron,leeseuljeong/leeseulstack_neutron,oeeagle/quantum,barnsnake351/neutron,gopal1cloud/neutron,magic0704/neutron,miyakz1192/neutron,sajuptpm/neutron-ipam,Brocade-OpenSource/OpenStack-DNRM-Neutron,armando-migliaccio/neutron,yuewko/neutron,yanheven/neutron,waltBB/neutron_read,cernops/neutron,alexandrucoman/vbox-neutron-agent,citrix-openstack-build/neutron,alexandrucoman/vbox-neutron-agent,huntxu/neutron,netscaler/neutron,NeCTAR-RC/neutron,CiscoSystems/vespa,suneeth51/neutron,sajuptpm/neutron-ipam,Juniper/neutron,vveerava/Openstack,glove747/liberty-neutron,openstack/neutron,asgard-lab/neutron,leeseuljeong/leeseulstack_neutron,yamahata/tacker,yanheven/neutron,mattt416/neutron,virtualopensystems/neutron,eayunstack/neutron,klmitch/neutron