core: Don't shutdown if key upgrades fail due to canceled context (#7070)
core: Don't shutdown if key upgrades fail due to canceled context (#7070)

* core: Don't shutdown if key upgrades fail due to canceled context

* Continue if we are not shutting down

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