User story:

Because I want to set how/when a new HCP (aka Hypershift) cluster will be updated, as a user, I want to select the update strategy for the control plane.   

Acceptance criteria (current ROSA classic functionally unless specified):

• Users may switch between individual and recurring strategies
• If the user chooses a recurring schedule, users may change the day and time (in UTC) for a maintenance start time.
• If the user chooses a recurring schedule, a new control plane upgrade policy is created immediately after the cluster has been created
• (NEW) There is text to inform the user that the update strategy settings apply only to the control plane
• (NEW) The recurring strategy is listed first and is selected by default

Mockups:

Mockups - settings tab |PD 1480

This screenshot shows the changes to the text and layout. The mock-up is for the settings tab, but these changes still apply:

Mock-ups - cluster updates wizard step | PD-1434

This screenshot shows the same text and layout changes for the cluster updates step:

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Implementation details

Notes:

• There is a new api endpoint to send update_policy for the control plane: /api/clusters_mgmt/v1/clusters/ {cluster_id}/control_plane/upgrade_policies. This new endpoint should be used instead of the endpoint used for OSD/ROSA clusters.