lxc-ls: prepend container name with -- when calling ls
lxc-ls: prepend container name with -- when calling ls

Otherwise a container name with a dash confuses ls

Signed-off-by: Serge Hallyn <3df611b026e4639bee8aef7a4beb2e39fcebb313@ubuntu.com>
Signed-off-by: Daniel Lezcano <3211518dd4d87cb3f7ee12cb52e14b7fb2bc0446@fr.ibm.com>

codebauss/lxc,tych0/lxc,akshaykarle/lxc,Distrotech/lxc,smoser/lxc,Ponce/lxc,weizhenwei/lxc,Distrotech/lxc,raspberrypython/lxc,glensc/lxc,aeris/lxc,rowhit/lxc,sapun/lxc,regit/lxc,smoser/lxc,fwilson42/lxc,bmoar/lxc,thmo/lxc,armcc/lxc,ksperis/lxc,ojkastl/lxc_Patches,hkjolhede/lxc,LynxChaus/lxc,DarknessBeforeDawn/lxc,virajs/lxc,sapun/lxc,major/lxc,Pelagicore/lxc,szaszg/lxc,ecarrara/lxc,cjwatson/lxc,abstrakraft/lxc-android-lxc,hfuCN/lxc,szaszg/lxc,smoser/lxc,ksperis/lxc,ysbnim/lxc,bostjan/lxc,terceiro/lxc,LynxChaus/lxc,sapun/lxc,lisongmin/lxc,cjwatson/lxc,terceiro/lxc,glensc/lxc,ojkastl/lxc_Patches,LynxChaus/lxc,christiaan/lxc,lisongmin/lxc,fwilson42/lxc,bmoar/lxc,abstrakraft/lxc-android-lxc,thmo/lxc,hkjolhede/lxc,bostjan/lxc,regit/lxc,GreatFruitOmsk/lxc,caglar10ur/lxc,akshaykarle/lxc,rowhit/lxc,efiop/lxc,armcc/lxc,DarknessBeforeDawn/lxc,GreatFruitOmsk/lxc,aeris/lxc,christiaan/lxc,yubo/lxc,ioops/lxc,lazy404/lxc,QingweiPeterLan/cs188-lxc,lisongmin/lxc,akshaykarle/lxc,aeris/lxc,federicobriata/lxc,rldleblanc/lxc,rowhit/lxc,QingweiPeterLan/cs188-lxc,ysbnim/lxc,yubo/lxc,JohnPeacockMessageSystems/lxc,terceiro/lxc,Distrotech/lxc,Ponce/lxc,ioops/lxc,raspberrypython/lxc,Pelagicore/lxc,efiop/lxc,regit/lxc,abstrakraft/lxc-android-lxc,tych0/lxc,federicobriata/lxc,virajs/lxc,hallyn/lxc,armcc/lxc,weizhenwei/lxc,rldleblanc/lxc,ksperis/lxc,thmo/lxc,ojkastl/lxc_Patches,ecarrara/lxc,szaszg/lxc,smoser/lxc,Ponce/lxc,codebauss/lxc,rldleblanc/lxc,caglar10ur/lxc,christiaan/lxc,major/lxc,cjwatson/lxc,JohnPeacockMessageSystems/lxc,caglar10ur/lxc,fwilson42/lxc,JohnPeacockMessageSystems/lxc,hfuCN/lxc,Pelagicore/lxc,lazy404/lxc,jirislaby/lxc,ss1h2a3tw/lxc,ojkastl/lxc_Patches,codebauss/lxc,glensc/lxc,jirislaby/lxc,virajs/lxc,bmoar/lxc,tych0/lxc,hallyn/lxc,ioops/lxc,coconutpilot/lxc-gentoo-new,bostjan/lxc,coconutpilot/lxc-gentoo-new,yubo/lxc,abstrakraft/lxc-android-lxc,lazy404/lxc,hkjolhede/lxc,major/lxc,GreatFruitOmsk/lxc,ecarrara/lxc,jirislaby/lxc,hfuCN/lxc,ss1h2a3tw/lxc,DarknessBeforeDawn/lxc,QingweiPeterLan/cs188-lxc,ss1h2a3tw/lxc,raspberrypython/lxc,efiop/lxc,weizhenwei/lxc,hallyn/lxc,federicobriata/lxc,ysbnim/lxc