tests: Retry LVM tear down
tests: Retry LVM tear down

Signed-off-by: Stéphane Graber <089afc6d81f66f1168a9849e15660feae286e024@ubuntu.com>

georghopp/lxd,Skarlso/lxd,akshaykarle/lxd,hallyn/lxd,erikmack/lxd,ollie314/lxd,lxc/lxd,pcdummy/lxd,stgraber/lxd,mjeanson/lxd,mjeanson/lxd,lxc/lxd,techtonik/lxd,yura-pakhuchiy/lxd,lxc/lxd,Skarlso/lxd,hallyn/lxd,yura-pakhuchiy/lxd,techtonik/lxd,ollie314/lxd,erikmack/lxd,stgraber/lxd,lxc/lxd,jsavikko/lxd,georghopp/lxd,chrisglass/lxd,pcdummy/lxd,hallyn/lxd,dustinkirkland/lxd,atxwebs/lxd,yura-pakhuchiy/lxd,atxwebs/lxd,atxwebs/lxd,akshaykarle/lxd,dustinkirkland/lxd,stgraber/lxd,stgraber/lxd,stgraber/lxd,jsavikko/lxd,mjeanson/lxd,akshaykarle/lxd,Skarlso/lxd,pcdummy/lxd,chrisglass/lxd,stgraber/lxd,ollie314/lxd,techtonik/lxd,chrisglass/lxd,lxc/lxd,lxc/lxd,hallyn/lxd,stgraber/lxd,Skarlso/lxd,dustinkirkland/lxd,georghopp/lxd,lxc/lxd,atxwebs/lxd,erikmack/lxd,hallyn/lxd,jsavikko/lxd,hallyn/lxd