Uniform real dimension interval does not align with input

[donglinjy]

Try different inputs as below. The first one is how we map Configspace UniformFloatHyperparameter into orion Real dimension.

>>> from orion.algo.space import Real,Dimension
>>> 
>>> Real("final_lr_fraction_log2", "uniform", -4.0, 0.0, default_value=-0.2)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/root/donglbj/hpobench/orion/src/orion/algo/space/__init__.py", line 462, in __init__
    super().__init__(name, prior, *args, **kwargs)
  File "/root/donglbj/hpobench/orion/src/orion/algo/space/__init__.py", line 185, in __init__
    self.validate()
  File "/root/donglbj/hpobench/orion/src/orion/algo/space/__init__.py", line 206, in validate
    raise ValueError(
ValueError: -0.2 is not a valid value for this Dimension. Can't set default value.
>>> 
>>> Real("final_lr_fraction_log2", "uniform", -4.0, 0.0, low=-4.0, high=0.0, default_value=-0.2)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/root/donglbj/hpobench/orion/src/orion/algo/space/__init__.py", line 462, in __init__
    super().__init__(name, prior, *args, **kwargs)
  File "/root/donglbj/hpobench/orion/src/orion/algo/space/__init__.py", line 185, in __init__
    self.validate()
  File "/root/donglbj/hpobench/orion/src/orion/algo/space/__init__.py", line 206, in validate
    raise ValueError(
ValueError: -0.2 is not a valid value for this Dimension. Can't set default value.
>>> 
>>> Real("final_lr_fraction_log2", "uniform", low=-4.0, high=0.0, default_value=-0.2)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/root/donglbj/hpobench/orion/src/orion/algo/space/__init__.py", line 462, in __init__
    super().__init__(name, prior, *args, **kwargs)
  File "/root/donglbj/hpobench/orion/src/orion/algo/space/__init__.py", line 185, in __init__
    self.validate()
  File "/root/donglbj/hpobench/orion/src/orion/algo/space/__init__.py", line 206, in validate
    raise ValueError(
ValueError: -0.2 is not a valid value for this Dimension. Can't set default value.

@bouthilx

[Delaunay]

So the behavior with Real is expected this is because the uniform dimension does not take
min, max as parameters but min, scale with scale = max - min.

The conversion is done inside by the dimension builder which is generally used to create the Orion Space.
There is a bug in the Orion space => Config Space function which was not making the right conversion.
PR#1034 should fix this

Thank you