Fixes #31497 - set default-consumer-window-size for jobs queue

[jturel]

Keeping in sync with Candlepin's broker.xml => candlepin/candlepin#2859

[wbclark]

I'm not sure what's wrong with the tests on EL8 but it seems unrelated since I can't reproduce it when running them locally:

After running it a 2nd time (to work around an selinux/idempotence issue that doesn't exist in the docker containers we use for CI):

centos8-64-1 executed in 0.34 seconds
is expected to be listening
Command "curl -k -s -o /dev/null -w '%{http_code}' https://localhost:8443/candlepin/status"
stdout

centos8-64-1 11:34:38$ /bin/sh -c curl\ -k\ -s\ -o\ /dev/null\ -w\ '%{http_code}'\ https://localhost:8443/candlepin/status
200
centos8-64-1 executed in 14.20 seconds
is expected to eq "200"

[ekohl]

Given what @wbclark said and that we see the same failure also in other tests, I'm going to merge this now.