Properly generates the url to a Middleware Manager Provider.
Properly generates the url to a Middleware Manager Provider.

Fixes #12498
(transferred from ManageIQ/manageiq@95f064ae55a1d918cdabb0c71bbc3323638fa8f1)

ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic