add-resource-preset and update-resource-preset set the CPU number as float

[serhiy-storchaka]

neuro admin add-resource-preset and neuro admin update-resource-preset set the CPU number as float, even if it was specified as integer. and neuro config show displays it as float (1.0). For built-in presets it can be displayed as integer (1).

For unification, we should either display the CPU number for all presets as a float, or convert the specified CPU number to int if it has integer value.