GH actions - build-and-test-all: parameterize workflow to run different docker runner versions

[romeroalx]

Short description

Parameterize workflow build-and-test-all for running different container images as runners.

This enables solving the request introduced in #13530 for testing also using libssl1.1.

Before backporting to branches rel/auth-4.9.x and rel/dnsdist-1.9.x, it is required to approve and merge the PR https://github.com/PowerDNS/base-pdns-ci-image/pull/12 in PowerDNS/base-pdns-ci-image

Checklist

I have:

• [x] read the CONTRIBUTING.md document
• [ ] compiled this code
• [x] tested this code
• [ ] included documentation (including possible behaviour changes)
• [ ] documented the code
• [ ] added or modified regression test(s)
• [ ] added or modified unit test(s)
• [ ] checked that this code was merged to master

[coveralls]

Pull Request Test Coverage Report for Build 8657820200

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 29 unchanged lines in 7 files lost coverage.
• Overall coverage increased (+1.0%) to 59.503%

---

Files with Coverage Reduction	New Missed Lines	%
pdns/misc.cc	1	61.42%
pdns/iputils.hh	2	74.9%
pdns/dnsdistdist/dnsdist.cc	2	68.34%
pdns/misc.hh	3	82.66%
pdns/signingpipe.cc	5	86.56%
pdns/recursordist/test-syncres_cc1.cc	8	89.73%
ext/json11/json11.cpp	8	64.49%
<!--	Total:	29

Totals
Change from base Build 8648661763:	1.0%
Covered Lines:	114107
Relevant Lines:	159290

---

💛 - Coveralls

[romeroalx]

PR updated. Modified to also read from github.base_ref for the case of PRs.