rest-api: Clarify password behavior
rest-api: Clarify password behavior

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

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