Enable setting the throughput flag for GP3 drives on master/worker instances during AWS IPI installation

Solution Verified - Updated -

Issue

  • How to enable customization of throughput settings for rootVolume drives during the installation of OpenShift in AWS to prevent production outages caused by the masters being capped at the default value of throughput.
  • How to customize the throughput settings of rootVolume drives at install time capped to the default 125MiB/s (for GP3).

Environment

  • Red Hat OpenShift Container Platform 4
  • AWS IPI installation

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