Tell pytest to ignore node_modules
Tell pytest to ignore node_modules

There is some python code pulled into node_modules and we shouldn't be
running tests over that.

pypa/warehouse,chopmann/warehouse,ismail-s/warehouse,karan/warehouse,ismail-s/warehouse,karan/warehouse,pypa/warehouse,HonzaKral/warehouse,chopmann/warehouse,ismail-s/warehouse,dstufft/warehouse,dstufft/warehouse,pypa/warehouse,HonzaKral/warehouse,alex/warehouse,karan/warehouse,ismail-s/warehouse,dstufft/warehouse,HonzaKral/warehouse,wlonk/warehouse,alex/warehouse,alex/warehouse,ismail-s/warehouse,alex/warehouse,dstufft/warehouse,HonzaKral/warehouse,chopmann/warehouse,pypa/warehouse,wlonk/warehouse,karan/warehouse,wlonk/warehouse,alex/warehouse,karan/warehouse