Fixed FileSequencePathFilterTest typos and removed chdir call.
Fixed FileSequencePathFilterTest typos and removed chdir call.

chippey/gaffer,GafferHQ/gaffer,GafferHQ/gaffer,hradec/gaffer,hradec/gaffer,ivanimanishi/gaffer,boberfly/gaffer,hradec/gaffer,andrewkaufman/gaffer,boberfly/gaffer,andrewkaufman/gaffer,chippey/gaffer,johnhaddon/gaffer,ImageEngine/gaffer,appleseedhq/gaffer,GafferHQ/gaffer,appleseedhq/gaffer,lucienfostier/gaffer,ivanimanishi/gaffer,andrewkaufman/gaffer,boberfly/gaffer,chippey/gaffer,johnhaddon/gaffer,ImageEngine/gaffer,andrewkaufman/gaffer,chippey/gaffer,boberfly/gaffer,lucienfostier/gaffer,ImageEngine/gaffer,ImageEngine/gaffer,GafferHQ/gaffer,hradec/gaffer,appleseedhq/gaffer,johnhaddon/gaffer,ivanimanishi/gaffer,hradec/gaffer,ivanimanishi/gaffer,lucienfostier/gaffer,GafferHQ/gaffer,appleseedhq/gaffer,andrewkaufman/gaffer,johnhaddon/gaffer,johnhaddon/gaffer,lucienfostier/gaffer