Fix indeterministic logging tests

[xhochy]

Printing the content of hash-based containers doesn't lead always to the same string as their ordering is not fixed. Luckily the number of possible permutations is so small that we can enumerate all of them.

Fixes #201.

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[xhochy]

bump can any maintainer have a look at this?

[sergiud]

std::find requires <algorithm>. What do you need <iterator> for?