Merge #21425: refactor: Pass PeerManagerImpl members only once

fa2a80b refactor: Pass PeerManagerImpl members only once (MarcoFalke)

Pull request description:

  Member variables are already passed to methods via `this`, so no need to pass them another time as function parameter.

ACKs for top commit:
  jnewbery:
    utACK fa2a80b
  amitiuttarwar:
    utACK fa2a80b

Tree-SHA512: 1743825c7560cc748235e3db03e4cea02ad1f670f1b898d7757da644f12693ba9bb2d3eb09b64b3d10dd2e68f52dea31e26d5e97bdc013759baa0515d3c7055c

Author: MarcoFalke