How to upgrade Red Hat OpenStack from 3.0 (Grizzly) to 4.0 (Havana)

Solution Unverified - Updated -

Issue

  • Please provide the steps for upgrading from RHOS 3.0 (Grizzly) to RHOS 4.0 (Havana)

Environment

  • Red Hat OpenStack 3.0
  • Red Hat OpenStack 4.0

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