Don't omit ignored nodes from schema agreement, if they're up
Don't omit ignored nodes from schema agreement, if they're up

see #615

vipjml/python-driver,thobbs/python-driver,thelastpickle/python-driver,mambocab/python-driver,datastax/python-driver,datastax/python-driver,thelastpickle/python-driver,mambocab/python-driver,vipjml/python-driver,coldeasy/python-driver,thobbs/python-driver,stef1927/python-driver,stef1927/python-driver,coldeasy/python-driver