Add methods for for provider creation pluggable UI

[agrare]

Add a method indicating the properties required to create an Azure Stack
provider and implement the common self.verify_credentials interface
method.

ManageIQ/manageiq#18818

[miq-bot]

Checked commit agrare@eb89ae2 with ruby 2.4.6, rubocop 0.69.0, haml-lint 0.20.0, and yamllint 1.10.0
1 file checked, 3 offenses detected

app/models/manageiq/providers/azure_stack/manager_mixin.rb

• ❗ - Line 101, Col 13 - Layout/AlignHash - Align the elements of a hash literal if they span more than one line.
• ❗ - Line 102, Col 13 - Layout/AlignHash - Align the elements of a hash literal if they span more than one line.
• ❗ - Line 103, Col 13 - Layout/AlignHash - Align the elements of a hash literal if they span more than one line.