Add options to mount tune and mount endpoints in preparation for versioning (#4155)

* Add some requirements for versioned k/v

* Add a warning message when an upgrade is triggered

* Add path help values

* Make the kv header a const

* Add the uid to mount entry instead of options map

* Pass the backend aware uuid to the mounts and plugins

* Fix comment

* Add options to secret/auth enable and tune CLI commands (#4170)

* Switch mount/tune options to use TypeKVPairs (#4171)

* switching options to TypeKVPairs, adding bool parse for versioned flag

* flipping bool check

* Fix leases coming back from non-leased pluin kv store

* add a test for updating mount options

* Fix tests

logical/plugin/backend_server.go

@@ -140,6 +140,7 @@ func (b *backendPluginServer) Setup(args *SetupArgs, reply *SetupReply) error {
 		Logger:      logger,
 		System:      sysView,
 		Config:      args.Config,
+		BackendUUID: args.BackendUUID,
 	}
 
 	// Call the underlying backend factory after shims have been created