The test sometimes failed because no error was returned:
=== Failed
=== FAIL: pkg/plugins TestClientWithRequestTimeout (0.00s)
client_test.go:254: assertion failed: expected an error, got nil: expected error
Possibly caused by a race condition, as the sleep was just 1 ms longer than the timeout;
this patch is increasing the sleep in the response to try to reduce flakiness.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>