Remote API shouldn't convert ints to floats in JSON output

[ammmir]

when the remote api returns numbers in its JSON response, they seem to be marshaled into floats instead of ints when the number is big enough (in docker inspect for example):

[{
    "Config": {
        "Memory": 6.7108864e+07,
        ...
    },
    ...
}]

they should instead be returned as ints, like 67108864 above, and respect the definition in the relevant struct.

the current output is valid JSON, but it's cumbersome to work with using json.Unmarshal without setting up a decoder and using d.UseNumber(), etc.

[LK4D4]

@ammir I tried to fix this in #6248. You could try my branch if you have enough time :)