Loop test seems unreliable

[bveldhoen]

Output of the Loop test:

[ RUN ] RedoxTest.Loop [ASYNC] GET redox_test:a: 18 /home/bramv/src/redox/test/test.cpp:75: Failure Value of: c.reply() Actual: "18" Expected: value Which is: "20" [ FAILED ] RedoxTest.Loop (116 ms)