* Use Cobbler API version format to check version
Cobbler use the formula below to return the version:
float(format(int(elems[0]) + 0.1 * int(elems[1]) + 0.001 * int(elems[2]), '.3f'))
Which means that 3.3.7 is changed to 3.307 which is > 3.4.
* Compare Cobbler version as a float
* Remove LooseVersion import
