Add existence check verification to config/client testcase
Add existence check verification to config/client testcase

Banno/vault,mymercurialsky/vault,hashicorp/vault,mgk/vault,skippy/vault,lirao/vault,hartsock/vault,jmhardison/vault,kenbreeman/vault,jmhardison/vault,kenbreeman/vault,joelthompson/vault,joelthompson/vault,hartsock/vault,lemondrank/vault,hashicorp/vault,mhurne/vault,deverton/hashicorp-vault,Aloomaio/vault,rnaveiras/vault,chrishoffman/vault,Aloomaio/vault,mgk/vault,tallpauley/vault,Caiyeon/vault,mymercurialsky/vault,hashicorp/vault,mhurne/vault,jam-pot/vault,memory/vault,quixoten/vault,chrishoffman/vault,Aloomaio/vault,doodles526/vault,michaelansel/vault,jmhardison/vault,peteryhwong/vault,Aloomaio/vault,quixoten/vault,mgk/vault,memory/vault,LolalyLuo/vault,Caiyeon/vault,joelthompson/vault,rnaveiras/vault,kingland/vault,naunga/vault,hashicorp/vault,jam-pot/vault,kenbreeman/vault,rnaveiras/vault,jmhardison/vault,michaelansel/vault,MonsantoCo/vault,jgcallero/vault,wjam/vault,martin-ducar-gd/vault,rnaveiras/vault,peteryhwong/vault,tallpauley/vault,hashicorp/vault,LolalyLuo/vault,cimarron-pistoncloud/vault,cimarron-pistoncloud/vault,deverton/hashicorp-vault,kingland/vault,kingland/vault,lemondrank/vault,kingland/vault,danielsomerfield/vault,rnaveiras/vault,hartsock/vault,ryon/vault,danielsomerfield/vault,skippy/vault,hashicorp/vault,martin-ducar-gd/vault,lirao/vault,joelthompson/vault,kingland/vault,wjam/vault,ryon/vault,quixoten/vault,kenbreeman/vault,naunga/vault,jmhardison/vault,doodles526/vault,mgk/vault,jgcallero/vault,hartsock/vault,MonsantoCo/vault,Banno/vault,hartsock/vault,kenbreeman/vault,quixoten/vault