fix pylint build file (#1005)
fix pylint build file (#1005)

* add missing license declaration which is required for third_party BUILD files into pylint BUILD

billonahill/heron,moomou/heron,twitter/heron,wangli1426/heron,zhangzhonglai/heron,moomou/heron,twitter/heron,mycFelix/heron,huijunwu/heron,moomou/heron,objmagic/heron,nlu90/heron,huijunwu/heron,lukess/heron,zhangzhonglai/heron,cliffyg/heron,ashvina/heron,billonahill/heron,zhangzhonglai/heron,zhangzhonglai/heron,streamlio/heron,srkukarni/heron,zhangzhonglai/heron,billonahill/heron,twitter/heron,streamlio/heron,zhangzhonglai/heron,streamlio/heron,wangli1426/heron,tomncooper/heron,srkukarni/heron,objmagic/heron,lucperkins/heron,ashvina/heron,lucperkins/heron,srkukarni/heron,huijunwu/heron,lewiskan/heron,cliffyg/heron,lewiskan/heron,mycFelix/heron,lewiskan/heron,ashvina/heron,huijunwu/heron,huijunwu/heron,tomncooper/heron,objmagic/heron,twitter/heron,tomncooper/heron,lucperkins/heron,nlu90/heron,streamlio/heron,lucperkins/heron,ashvina/heron,zhangzhonglai/heron,cliffyg/heron,lewiskan/heron,tomncooper/heron,objmagic/heron,streamlio/heron,objmagic/heron,cliffyg/heron,cs564/heron,tomncooper/heron,lukess/heron,lewiskan/heron,tomncooper/heron,lukess/heron,moomou/heron,wangli1426/heron,billonahill/heron,mycFelix/heron,cliffyg/heron,huijunwu/heron,ashvina/heron,cs564/heron,mycFelix/heron,srkukarni/heron,cs564/heron,objmagic/heron,nlu90/heron,lucperkins/heron,wangli1426/heron,ashvina/heron,cs564/heron,wangli1426/heron,lucperkins/heron,cs564/heron,moomou/heron,tomncooper/heron,cs564/heron,srkukarni/heron,lewiskan/heron,cliffyg/heron,srkukarni/heron,mycFelix/heron,wangli1426/heron,cliffyg/heron,cliffyg/heron,twitter/heron,lucperkins/heron,wangli1426/heron,objmagic/heron,nlu90/heron,moomou/heron,lucperkins/heron,moomou/heron,moomou/heron,objmagic/heron,nlu90/heron,lukess/heron,streamlio/heron,mycFelix/heron,moomou/heron,objmagic/heron,twitter/heron,cs564/heron,nlu90/heron,nlu90/heron,cs564/heron,streamlio/heron,wangli1426/heron,cliffyg/heron,tomncooper/heron,lukess/heron,zhangzhonglai/heron,mycFelix/heron,lukess/heron,srkukarni/heron,lewiskan/heron,ashvina/heron,cs564/heron,ashvina/heron,streamlio/heron,lewiskan/heron,lukess/heron,billonahill/heron,lewiskan/heron,billonahill/heron,ashvina/heron,zhangzhonglai/heron,nlu90/heron,huijunwu/heron,wangli1426/heron,srkukarni/heron,lukess/heron,mycFelix/heron,twitter/heron,twitter/heron,nlu90/heron,mycFelix/heron,streamlio/heron,billonahill/heron,billonahill/heron,billonahill/heron,lukess/heron,huijunwu/heron,tomncooper/heron