Make `vault.read` raise meaningful exception
Make `vault.read` raise meaningful exception

armab/st2contrib,StackStorm/st2contrib,tonybaloney/st2contrib,StackStorm/st2contrib,pidah/st2contrib,armab/st2contrib,pearsontechnology/st2contrib,pearsontechnology/st2contrib,StackStorm/st2contrib,pidah/st2contrib,tonybaloney/st2contrib,pearsontechnology/st2contrib,armab/st2contrib,pidah/st2contrib,tonybaloney/st2contrib,pearsontechnology/st2contrib