Fix memory requests/limits value

[Giorgos Christos Dimitriou]

The current value that get returned from the functions :

container.Resources.Requests/Limits.Memory().Value()

returns and Int64 which is an unscaled value rounded up to the nearest integer away from 0. godoc

The current solution is off by ~100Mi when in come to Gi of memory and it was noticed that it started happen around 4000Mi

The ScaledValue() doesnt really work as it misses the correct amount by ~5% in all memory metrics

kubectl uses converResourceMemoryToString to standardise the metrics