Floating point arithmetics often lead to unsignificant differences between expected and computed values (this is the typical example of 0.1 + 0.2 != 0.3). Because of this, some tests using assertEqual to compare two floats were failing. The Python method [assertAlmostEqual](https://docs.python.org/2.7/library/unittest.html#unittest .TestCase.assertAlmostEqual) can prevent these issues by comparing values up to the seventh decimal place. To find all occurences, two RegExp were ran on all files of the tests/ folder: assertEquals?(\\(.+, [0-9]+\\.[0-9]+\\)) and assertEquals?(\\([0-9]+\\.[0-9]+).

Goes in part with similar MR in slapos.core.

/cc @jerome @xavier_thompson