`TestDaemonDiscoveryBackendConfigReload` was doing some wierd things
with files, creating a file (directly in `./integration-cli`), removing
it, then creating a new file.
This is just weird, so fixed it to use a single file, file will go into
a temp dir so it doesn't pollute integration-cli.
It was also blindly sending a SIGHUP to the daemon process then sleeping
for 3 seconds. This is racey, and slow.
Change this to look for the daemon-reload event in the event stream.
Reload logic is moved to a separate function and blocks (w/ a timeout)
waiting for the reload event to fire.
Runtime of the test is now ~0.5s on my machine, where as it was a
minimum of 3s due to the `time.Sleep` before.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Use `OnTimeout` callback on test timeouts to trigger a stack dump for
running daemons. This will help analyze stuck tests.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
