Add ems_infra_admin_ui feature

[vojtechszocs]

This PR is part of the following series:

• Add ems_infra_admin_ui feature (manageiq)
• Add ems_infra_admin_ui feature support (manageiq-ui-classic)
• Add admin_ui feature support to InfraManager (manageiq-providers-ovirt)

The ems_infra_admin_ui product feature represents Infrastructure Provider's capability to link to its own (provider-specific) administration UI.

This feature is currently associated with EvmRole-operator (just like ems_infra_refresh).

Inspired by @jhernand (see original PR here).

[vojtechszocs]

cc @himdel @oourfali

[jhernand]

I'd suggest to add oVirt somewhere in the description, and maybe also in the name of the feature.

[jhernand]

I just saw in other pull request that you are adding a supports mechanism to the provider. If that is going to be generic then you can disregard this comment.

[vojtechszocs]

Yes, I've consulted this with @himdel and decided to make this feature generic - each Infra Provider would have the option to support the admin_ui product feature.

[jhernand]

I think it is better if you don't do unrelated fixes in this pull request. If you think these should be fixed, do it in a separate pull request.

[vojtechszocs]

Agreed. My IDE automatically strips trailing whitespace. I'll revert those changes.

[miq-bot]

Checked commit vojtechszocs@9c34aed with ruby 2.3.3, rubocop 0.47.1, and haml-lint 0.20.0
1 file checked, 1 offense detected

app/models/mixins/supports_feature_mixin.rb

• ❗ - Line 89, Col 5 - Style/AlignHash - Align the elements of a hash literal if they span more than one line.

[vojtechszocs]

@simaishi we would like to backport this to 5.9 but I can't find a way how to add the gaprindashvili/yes label. Can you please assist?

[oourfali]

@miq-bot add_label gaprindashvili/yes

[simaishi]

Gaprindashvili backport details:

$ git log -1
commit c7680af415e0535a8e316c1bb0b49db13c78f5f3
Author: Adam Grare <agrare@redhat.com>
Date:   Tue Nov 14 08:31:14 2017 -0500

    Merge pull request #16403 from vojtechszocs/link-ovirt-ui
    
    Add ems_infra_admin_ui feature
    (cherry picked from commit 141cdac427cdb755748db82a431ee217f944e09a)