Update axisgrid palette-related tests
Update axisgrid palette-related tests

mwaskom/seaborn,arokem/seaborn,mwaskom/seaborn,phobson/seaborn,phobson/seaborn,sauliusl/seaborn,arokem/seaborn,anntzer/seaborn,petebachant/seaborn,lukauskas/seaborn,lukauskas/seaborn,anntzer/seaborn