check that the container is running in exec API call
check that the container is running in exec API call

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

yura-pakhuchiy/lxd,georghopp/lxd,jsavikko/lxd,lxc/lxd,ollie314/lxd,dvbportal/osx-lxd,yura-pakhuchiy/lxd,mikemccracken/lxd,benaryorg/lxd,beni55/lxd,mjeanson/lxd,lxc/lxd,erikmack/lxd,jumpstarter-io/lxd,rrva/lxd,ollie314/lxd,tych0/lxd,stgraber/lxd,chrisglass/lxd,ericsnowcurrently/lxd,smoser/lxd,atxwebs/lxd,akshaykarle/lxd,lxc/lxd,akshaykarle/lxd,jsavikko/lxd,basvanbeek/lxd,hallyn/lxd,dustinkirkland/lxd,Skarlso/lxd,rcj4747/lxd,erikmack/lxd,jumpstarter-io/lxd,georghopp/lxd,benaryorg/lxd,Malizor/lxd,erikmack/lxd,lxc/lxd,stgraber/lxd,lxc/lxd,sl1pm4t/lxd,pcdummy/lxd,smoser/lxd,hallyn/lxd,Skarlso/lxd,atxwebs/lxd,tych0/lxd,dvbportal/osx-lxd,georghopp/lxd,atxwebs/lxd,pcdummy/lxd,rcj4747/lxd,jensg-st/lxd,pcdummy/lxd,stgraber/lxd,akshaykarle/lxd,lxc/lxd,sl1pm4t/lxd,jsavikko/lxd,benaryorg/lxd,yura-pakhuchiy/lxd,dustinkirkland/lxd,hallyn/lxd,Skarlso/lxd,stgraber/lxd,basvanbeek/lxd,jensg-st/lxd,smoser/lxd,jumpstarter-io/lxd,Malizor/lxd,mikemccracken/lxd,achanda/lxd,mjeanson/lxd,dustinkirkland/lxd,rrva/lxd,chrisglass/lxd,tych0/lxd,beni55/lxd,achanda/lxd,ericsnowcurrently/lxd,techtonik/lxd,atxwebs/lxd,hallyn/lxd,hallyn/lxd,mjeanson/lxd,Malizor/lxd,Skarlso/lxd,achanda/lxd,stgraber/lxd,dvbportal/osx-lxd,basvanbeek/lxd,ericsnowcurrently/lxd,stgraber/lxd,stgraber/lxd,rrva/lxd,rcj4747/lxd,chrisglass/lxd,techtonik/lxd,techtonik/lxd,mikemccracken/lxd,sl1pm4t/lxd,hallyn/lxd,beni55/lxd,ollie314/lxd,lxc/lxd,jensg-st/lxd