If we have not yet completed post-unseal when running in single-node mode, don't advertise that we are active.
If we have not yet completed post-unseal when running in single-node
mode, don't advertise that we are active.

Ping #872

rnaveiras/vault,joelthompson/vault,LolalyLuo/vault,careyblack/vault,hashicorp/vault,Banno/vault,Aloomaio/vault,michaelansel/vault,wjam/vault,sepiroth887/vault,Aloomaio/vault,mgk/vault,peteryhwong/vault,hashbrowncipher/vault,geckoboard/vault,MonsantoCo/vault,ryon/vault,quixoten/vault,jgcallero/vault,jmhardison/vault,kenbreeman/vault,rnaveiras/vault,Aloomaio/vault,cimarron-pistoncloud/vault,lirao/vault,doodles526/vault,deverton/hashicorp-vault,memory/vault,hashbrowncipher/vault,hartsock/vault,wjam/vault,doubledutch/vault,skippy/vault,lirao/vault,tallpauley/vault,geckoboard/vault,kingland/vault,michaelansel/vault,kingland/vault,chrishoffman/vault,peteryhwong/vault,martin-ducar-gd/vault,andrewstuart/vault,joelthompson/vault,lemondrank/vault,danielsomerfield/vault,hashicorp/vault,jgcallero/vault,andrewstuart/vault,mgk/vault,skippy/vault,quixoten/vault,hashbrowncipher/vault,kingland/vault,careyblack/vault,doubledutch/vault,jam-pot/vault,andrewstuart/vault,hartsock/vault,doodles526/vault,jmhardison/vault,annanay25/vault,joelthompson/vault,rnaveiras/vault,hartsock/vault,kenbreeman/vault,geckoboard/vault,annanay25/vault,naunga/vault,grunzwei/vault,danielsomerfield/vault,andrewstuart/vault,rnaveiras/vault,sepiroth887/vault,Caiyeon/vault,hashicorp/vault,careyblack/vault,Caiyeon/vault,lemondrank/vault,rnaveiras/vault,hashicorp/vault,grunzwei/vault,MonsantoCo/vault,quixoten/vault,hartsock/vault,kenbreeman/vault,chrishoffman/vault,doubledutch/vault,tallpauley/vault,jam-pot/vault,quixoten/vault,mymercurialsky/vault,sepiroth887/vault,careyblack/vault,careyblack/vault,mhurne/vault,Banno/vault,jmhardison/vault,hashbrowncipher/vault,grunzwei/vault,Aloomaio/vault,andrewstuart/vault,doubledutch/vault,deverton/hashicorp-vault,sepiroth887/vault,sepiroth887/vault,memory/vault,cimarron-pistoncloud/vault,hashicorp/vault,hashbrowncipher/vault,martin-ducar-gd/vault,grunzwei/vault,grunzwei/vault,mhurne/vault,joelthompson/vault,jmhardison/vault,geckoboard/vault,mgk/vault,naunga/vault,mgk/vault,kingland/vault,mymercurialsky/vault,ryon/vault,kenbreeman/vault,annanay25/vault,hashicorp/vault,LolalyLuo/vault,doubledutch/vault,kenbreeman/vault,geckoboard/vault,annanay25/vault,hartsock/vault,annanay25/vault,jmhardison/vault,kingland/vault