add a 'tags' target to make a ctags file
add a 'tags' target to make a ctags file

Signed-off-by: Tycho Andersen <10c18fcb898ee6b17d6575d444b125d10b3f4d6a@canonical.com>

stgraber/lxd,akshaykarle/lxd,hallyn/lxd,jensg-st/lxd,atxwebs/lxd,lxc/lxd,atxwebs/lxd,stgraber/lxd,georghopp/lxd,stgraber/lxd,mikemccracken/lxd,Skarlso/lxd,yura-pakhuchiy/lxd,techtonik/lxd,yura-pakhuchiy/lxd,atxwebs/lxd,hallyn/lxd,ericsnowcurrently/lxd,achanda/lxd,lxc/lxd,smoser/lxd,Malizor/lxd,benaryorg/lxd,jensg-st/lxd,jsavikko/lxd,Skarlso/lxd,achanda/lxd,jensg-st/lxd,hallyn/lxd,mjeanson/lxd,stgraber/lxd,dustinkirkland/lxd,jumpstarter-io/lxd,ericsnowcurrently/lxd,lxc/lxd,beni55/lxd,Skarlso/lxd,jsavikko/lxd,mikemccracken/lxd,Malizor/lxd,dustinkirkland/lxd,yura-pakhuchiy/lxd,techtonik/lxd,mikemccracken/lxd,georghopp/lxd,lxc/lxd,akshaykarle/lxd,erikmack/lxd,stgraber/lxd,ollie314/lxd,stgraber/lxd,pcdummy/lxd,pcdummy/lxd,lxc/lxd,chrisglass/lxd,smoser/lxd,pcdummy/lxd,akshaykarle/lxd,Malizor/lxd,beni55/lxd,ollie314/lxd,hallyn/lxd,mjeanson/lxd,mjeanson/lxd,ericsnowcurrently/lxd,Skarlso/lxd,ollie314/lxd,chrisglass/lxd,atxwebs/lxd,beni55/lxd,hallyn/lxd,jsavikko/lxd,lxc/lxd,dustinkirkland/lxd,benaryorg/lxd,stgraber/lxd,smoser/lxd,jumpstarter-io/lxd,lxc/lxd,erikmack/lxd,erikmack/lxd,achanda/lxd,techtonik/lxd,jumpstarter-io/lxd,chrisglass/lxd,hallyn/lxd,benaryorg/lxd,georghopp/lxd