Show bound_service_accounts in gce example (#8236)
Show bound_service_accounts in gce example (#8236)

Shows that the GCP auth option `bound_service_accounts` can be used
for gce-type roles as well as iam.
rnaveiras/vault,quixoten/vault,kingland/vault,kingland/vault,rnaveiras/vault,quixoten/vault,quixoten/vault,hashicorp/vault,hartsock/vault,hashicorp/vault,rnaveiras/vault,hashicorp/vault,kingland/vault,kingland/vault,hashicorp/vault,hartsock/vault,hartsock/vault,rnaveiras/vault,hartsock/vault,hashicorp/vault,kingland/vault,hashicorp/vault,quixoten/vault,hartsock/vault,rnaveiras/vault