Add a EmsRefreshWorkflow#refresh_target method

[agrare]

Allow provider subclasses to override the refresh_target method to control the refresh target.

[agrare]

Ref https://github.com/ManageIQ/manageiq-providers-cisco_intersight/pull/81/files#r1033628538

[miq-bot]

Checked commit agrare@d55b337 with ruby 2.6.10, rubocop 1.28.2, haml-lint 0.35.0, and yamllint
1 file checked, 0 offenses detected
Everything looks fine. ⭐

[Fryguy]

Can't the provider author just override target_entity? I'm confused what the extra method brings.

[agrare]

Can't the provider author just override target_entity? I'm confused what the extra method brings.

target_entity is used for other things in the Job, it was convenient to use that as the refresh target but if you don't want to do that overriding target_entity will prevent you from accessing that.

As an example, if you want to reconfigure a VM but for some reason your provider only supports Host targeted refresh. You want your target_entity to be the VM but you want to have your refresh_target to be the target_entity.host

[miq-bot]

This pull request has been automatically marked as stale because it has not been updated for at least 3 months.

If these changes are still valid, please remove the stale label, make any changes requested by reviewers (if any), and ensure that this issue is being looked at by the assigned/reviewer(s)

Thank you for all your contributions! More information about the ManageIQ triage process can be found in the triage process documentation.

[agrare]

Still relevant, removing the stale label