WIP: Add chi2 condition for VP Alignment tests

Currently there are issues with master using gaudiiter where Alignment doesn't converge. One way of spotting this is by looking at the normalised alignment change chisquare value for each iteration to make sure that it decreases. There seems to be no issues with gaudipariter or gaudisplititer where the Alignment converges. I propose adding this check in the qmt files so that this can be checked in nightlies.

Additionally, I have added a small change to save all iteration information to the log file when using gaudiiter as in master only the final iteration is saved to the file. This change just appends to the same log file. This shouldn't cause any problems for other scripts and hopefully shouldn't break anything fundamental.

Currently, the tests don't work/not complete but I will be working on this.