Export list of content host do not honour search filter
Description of problem:
Exporting list of content host on the basis of search filter result added all content hosts in csv file.
Version-Release number of selected component (if applicable):
Satellite 6.4 snap 17
How reproducible: always
Steps to Reproduce:
1. Navigate to Hosts-> content host (Have some hosts in satellite)
2. Search for any host pattern (such as os_title ~ "RHEL Server 7.5")
3. Click on export
All the hosts info in satellite get exported in csv.
only filtered host info should present in csv.
Additional info: This works as expected at Hosts -> All hosts page. (Export on content host page is newly added in sat 6.4)