fix timeouts in passenger standalone #288

Job	Run time
C++ tests on macOS	4m 23s
Homebrew packaging tests	6m 2s
C++ tests on Linux	2m 21s
Apache2 tests on Linux	2m 23s
Apache2 tests on macOS	2m 50s
Nginx tests on Linux	2m 56s
Nginx dynamic module tests on Linux	1m 29s
Node.js tests on Linux	14s
Node.js tests on macOS	34s
Ruby tests on Linux	1m 26s
Nginx dynamic module tests on macOS	1m 30s
Ruby tests on macOS	1m 28s
Nginx tests on macOS	3m 57s
Source packaging tests	26s
Passenger Standalone tests on Linux	4m 22s
Passenger Standalone tests on macOS	4m 27s
	40m 48s

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