[WIP] Fix refresh if the location is nil

[agrare]

ERROR -- evm: MIQ(ManageIQ::Providers::Redfish::PhysicalInfraManager::Refresher#refresh) EMS: [10.2.2.250], id: [3] Refresh failed
ERROR -- evm: /opt/manageiq/manageiq-gemset/bundler/gems/manageiq-providers-redfish-0a009d144955/app/models/manageiq/providers/redfish/inventory/parser/physical_infra_manager.rb:85:in `dig'
ERROR -- evm: MIQ(ManageIQ::Providers::Redfish::PhysicalInfraManager::Refresher#refresh) EMS: [10.2.2.250], id: [3] Unable to perform refresh for the following targets:
ERROR -- evm: MIQ(ManageIQ::Providers::Redfish::PhysicalInfraManager::Refresher#refresh)  --- ManageIQ::Providers::Redfish::PhysicalInfraManager [] id [3]

[miq-bot]

Checked commit agrare@8478a99 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. 🏆

[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).

[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).