[2132744] Description text is missing in Live Migrations section

Description of problem: Description text is missing in Live Migrations section: "some text" appears instead. Also, the wording is wrong on control titles: should be "Max. migrations"

Version-Release number of selected component (if applicable): v4.12.0-131

How reproducible: always

Steps to Reproduce:
1. Open Virtualization Overview page
2. Go to Settings tab
3. Go to Live Migrations section

Actual results: see screenshot

Expected results:

Additional info: