Make prinout of differences in Counter, 1DHistograms, and 1DProfiles deterministic

As an example for how it is right now, have a look at the brunel-extraptester test in :

• https://lhcb-nightlies.web.cern.ch/nightly/lhcb-master-mr/2562/Brunel/x86_64_v2-centos7-clang11-dbg/tests
• https://lhcb-nightlies.web.cern.ch/nightly/lhcb-master-mr/2562/Brunel/x86_64_v2-centos7-clang11-opt/tests

The order of the algorithms and counters reported isn't fixed, which makes the comparison harder than it needs to be.

This MR tries to ensure we print these differences in alphabetical order.