Issue 6583 - Fix CI on older branches - 2.0

[vashirov]

Bug Description:
Test execution on older branches (1.4.x, some 2.x) fails. We use the same Fedora base image across all branches, but it contains newer toolchain and doesn't have some build dependencies.

Fix Description:
Use appropriate images: EL8 for 1.4.x, EL9 for 2.x, EL10/Fedora for 3.x.

Fixes: #6583

[vashirov]

@mreynolds389, @droideck, I see the following error during the build:

make[1]: Entering directory '/__w/389-ds-base/389-ds-base/src/cockpit/389-console'
npm run build && cp -r dist cockpit_dist

> 389-console@1.0.0 build
> webpack

ERROR in 
/__w/389-ds-base/389-ds-base/src/cockpit/389-console/src/ds.jsx
  480:40  error  '_' is not defined  no-undef

✖ 1 problem (1 error, 0 warnings)

It doesn't happen on more recent branches, I vaguely remember this was related to one of the npm packages. Maybe you know?

[droideck]

It doesn't happen on more recent branches, I vaguely remember this was related to one of the npm packages. Maybe you know?

Yeah, it's related to this commit - 098b6c8#diff-e4cb41551d17bd6c01381a4fe5aa014144db65516bef010a0151b0ce065b68cfR40

While doing backports, I touched only the branches we release - 1.4.3, 2.2-3.0.

For 2.1 and 2.0, there are so many missing commits that the current UI version produces A LOT of conflicts... (first for builder backport, then for localization and then for PF5)

[vashirov]

Makes sense 👍
I'll drop PRs for 2.0, 2.1 then. Perhaps we should mark these branches as protected to avoid pushing backports there since we no longer maintain them.