Store lease times suitable for export in pending (#4730)
Store lease times suitable for export in pending (#4730)

* Store lease times suitable for export in pending

This essentially caches lease information for token lookups, preventing
going to disk over and over.

* Simplify logic

rnaveiras/vault,joelthompson/vault,hartsock/vault,rnaveiras/vault,hashicorp/vault,hashicorp/vault,joelthompson/vault,hashicorp/vault,quixoten/vault,hashicorp/vault,quixoten/vault,kingland/vault,kingland/vault,quixoten/vault,hashicorp/vault,hartsock/vault,rnaveiras/vault,quixoten/vault,joelthompson/vault,kingland/vault,hartsock/vault,hashicorp/vault,kingland/vault,rnaveiras/vault,kingland/vault,hartsock/vault,hartsock/vault,rnaveiras/vault,joelthompson/vault