mark all repos as safe in rpm tests #280

Job	Run time
C++ tests on Linux	1m 23s
Apache2 tests on Linux	2m 33s
C++ tests on macOS	4m 5s
Homebrew packaging tests	7m 43s
Apache2 tests on macOS	2m 31s
Nginx tests on Linux	2m 19s
Nginx tests on macOS	3m 9s
Ruby tests on Linux	1m 8s
Nginx dynamic module tests on Linux	1m 10s
Node.js tests on Linux	26s
Ruby tests on macOS	1m 23s
Nginx dynamic module tests on macOS	1m 25s
Node.js tests on macOS	26s
Passenger Standalone tests on Linux	3m 29s
Passenger Standalone tests on macOS	4m 43s
Source packaging tests	30s
	38m 23s

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