tests: Don't fail when GOPATH isn't set
tests: Don't fail when GOPATH isn't set

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

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