Keep file type in inode tracker

* Remove GO version checks in the can_build_ducc function

* Removing obsolete test

The test which is being removed was obsoleted when the FQDN validation rules were relaxed.

* Make image string parsing tests self contained

* Use bundled GO for unit tests

Catch all errors of publisher construction in txn cmd

This reverts commit 179d041346f8844c05a79d212bf7d1d98065fdb7.

This reverts commit 0b2cd8ead53e46e5082258a14218d7e8c1e0c932.

Fix unit tests on EL9

* Enable SHA1 signatures for OpenSSL

* Use openssl pkeyutil where rsautl deprecated

* Fix openssl cmd

* Update notes

* fix and simplify unit test runner

* improve reporting of unit test runner

* improve reporting of unit test runner

* always run container tools unit tests if code can be built

* flag failures in _every_ unit test as global failure

* run all unit tests even in case of failures

* prevent hang in failing libcvmfs unit tests

* avoid crash in failing StringHeap unit test

* remove debug code

* Add initial EL9 integration test scritps

* redhat-lsb-core package not available on CS9

* Python 2 is not available on CS9

Co-authored-by: Jakob Blomer <jblomer@cern.ch>