Adjust to python 3 difference in output from pyAMI
Different output from pyAMI - in python 2 we get
[OrderedDict([(u'productionStep', u'select'), (u'tagType', u'q'))]
while in python 3 we get
[OrderedDict([('amiTag', 'q221')]), OrderedDict([('productionStep', 'select'), ('tagType', 'q'))]
i.e. a list with 1 OrderedDict element in python 2, then a list with 2 OrderedDict elements in python 3. Not clear why.
Put in a check on the size of the output. test_trigAna_q221_RDOtoRDOTrig_mt1_build.sh
now runs in py3.