Change reload uptime test to reload all reloadable components.
Change reload uptime test to reload all reloadable components.

In our test to ensure we don't drop any connecting on reloads, switch to
use the "api-umbrella reload" command, rather than manually reloading
just nginx. This better ensures that we won't drop any connections when
the broader reload command is called, which also reloads TrafficServer.

apinf/api-umbrella,NREL/api-umbrella,apinf/api-umbrella,NREL/api-umbrella,NREL/api-umbrella,apinf/api-umbrella,NREL/api-umbrella,apinf/api-umbrella,apinf/api-umbrella