Create dedicated struct to hold desired limits

[flavio]

Right now the limits to be used are built inside of the createLimitRange function. This function is invoked every time a new namespace is created.

The values should be read once inside of the main function, put into a dedicated struct and then provided as a parameter to the createLimitRange function.

Kinda similar, the version variable declared on line 20 of the function should be transformed into a constant declared as a global.