lxc-ubuntu: use relative path as target for bind mount
lxc-ubuntu: use relative path as target for bind mount

An absolute path will be interpreted as absolute with respect to the
parent's namespace.

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

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