Update issue template
Update issue template

Hide header when rendering by commenting it out so we don't
have to read it over and over again when looking at issues.

Signed-off-by: Michel Zimmer <1cab525b80df67fa95fd9eb388b1b7177861ad74@uni-bremen.de>

jsavikko/lxd,lxc/lxd,erikmack/lxd,pcdummy/lxd,erikmack/lxd,pcdummy/lxd,atxwebs/lxd,mjeanson/lxd,stgraber/lxd,Skarlso/lxd,atxwebs/lxd,hallyn/lxd,hallyn/lxd,hallyn/lxd,erikmack/lxd,hallyn/lxd,atxwebs/lxd,jsavikko/lxd,atxwebs/lxd,lxc/lxd,mjeanson/lxd,Skarlso/lxd,stgraber/lxd,lxc/lxd,stgraber/lxd,lxc/lxd,jsavikko/lxd,pcdummy/lxd,stgraber/lxd,hallyn/lxd,stgraber/lxd,mjeanson/lxd,lxc/lxd,stgraber/lxd,stgraber/lxd,Skarlso/lxd,lxc/lxd,lxc/lxd,Skarlso/lxd,hallyn/lxd