update AMI tags for tests, and add flags to use old ones
Move to newer versions of AMI tags for tests as standard (uses ATLAS-P2-ITK-22-02-00 instead of ITK-22-00-00, e.g. including new pixel ID scheme and NSW muon geometry).
Add -o
flag to run the previous version of the tests.
NB this relies on either !34039 (merged) or !34036 (merged) so should not be merged before one of those is in.
Edited by Nicholas Styles