kademlia bins should reach oversaturation level

[istae]

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Currently, the swarm network is very static, meaning the rate of new nodes joining and existing nodes rebooting is low. This, combined with kademlia's connection logic, causes bins to not fill up to oversaturation levels (eg < 20 peers).

Ideally, for a healthier network, bins should be full up to the oversaturation mark.

example:

"bins": {
    "bin_0": {
      "population": 675,
      "connected": 13
    },
    "bin_1": {
      "population": 450,
      "connected": 14
    },
    "bin_2": {
      "population": 210,
      "connected": 19
    },
    "bin_3": {
      "population": 97,
      "connected": 16
    },
    "bin_4": {
      "population": 66,
      "connected": 17
    },
    "bin_5": {
      "population": 29,
      "connected": 14
    },
    "bin_6": {
      "population": 18,
      "connected": 16
    },
    "bin_7": {
      "population": 9,
      "connected": 9
    },

Task

Acceptance criterea

Early bins must reach oversaturation number of peers.