BZ2102230: change rhcos redirector url

[jldohmann]

Version(s): 4.11+

Issue: https://bugzilla.redhat.com/show_bug.cgi?id=2102230

Link to docs preview: http://file.rdu.redhat.com/jdohmann/BZ2102230/installing/install_config/configuring-firewall.html#configuring-firewall_configuring-firewall

Additional information:

[jldohmann]

@travier @mike-nguyen can y'all PTAL to make sure URLs are correct? Also, the BZ ticket says to backport to 4.8, should this PR apply to 4.8-4.10 as well? Just wanna check. Thanks!

[mike-nguyen]

I think this will apply all the way back to 4.6--possibly 4.5 depending on whether would break old installs.

Here is the PR for 4.6 and 4.7
openshift/installer#6138
openshift/installer#6139

The RHCOS team is planning on doing a boot image bump for 4.9 and 4.8 where the URL will be updated in the installer

[jldohmann]

@mike-nguyen thanks for the info, I'm thinking maybe separate PRs for those would be best if the installer PRs are not merged yet. If we cherrypicked this PR to 4.6-4.10 before the installer PRs are merged, customers won't have the correct information. Wdyt?

[GroceryBoyJr]

@jldohmann @mike-nguyen I recommend different PR's for each release. If the cherrypick fails (likely), you have to do individual PR's for each failing release anyway.

[GroceryBoyJr]

/LGTM!

[mike-nguyen]

Agreed with separate PRs. We'll just need to keep them in mind when the boot image bumps merge since they don't have a BZ directly tied to them.

[travier]

For 4.11+, the installer will be released with this URL only, but for backports, we should include both URLs in the docs as older installers will keep using the previous one.

+1 for separate PRs that land when the installer changes land.

[opayne1]

/cherry-pick enterprise-4.11

[openshift-cherrypick-robot]

@opayne1: new pull request created: #48103

In response to this:

/cherry-pick enterprise-4.11

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