add pylint to dev dependencies
add pylint to dev dependencies

DXCanas/content-curation,fle-internal/content-curation,jayoshih/content-curation,DXCanas/content-curation,DXCanas/content-curation,fle-internal/content-curation,jayoshih/content-curation,fle-internal/content-curation,jayoshih/content-curation,fle-internal/content-curation,DXCanas/content-curation,jayoshih/content-curation