Description of problem:

In Content Hosts view clicking on the installable updates column to sort by updates does nothing. Issue on Satellite 6.15.4.1

How reproducible:

Every time. 

Is this issue a regression from an earlier version:

no

Steps to Reproduce:

1.Go to Content Hosts

2. Click on the installable updates column to sort.

Actual behavior:
Clicking does not sort by updates.

Expected behavior:
Clicking should sort installable updates from more to less or less to more.

Business Impact / Additional info:

Minimum. It is harder to get a quick glimpse of installable updates status without actually generating.