Revert "[AIRFLOW-2903] Change default owner from "Airflow" to "airflow""
Revert "[AIRFLOW-2903] Change default owner from "Airflow" to "airflow""

This reverts commit 54ae12b59affd71d2de641826d7d62008f09bb4a.

edgarRd/incubator-airflow,wooga/airflow,nathanielvarona/airflow,gtoonstra/airflow,apache/incubator-airflow,mrkm4ntr/incubator-airflow,nathanielvarona/airflow,jgao54/airflow,nathanielvarona/airflow,gtoonstra/airflow,mtagle/airflow,adamhaney/airflow,mrkm4ntr/incubator-airflow,sekikn/incubator-airflow,dhuang/incubator-airflow,artwr/airflow,sekikn/incubator-airflow,lyft/incubator-airflow,adamhaney/airflow,cfei18/incubator-airflow,cfei18/incubator-airflow,apache/airflow,Acehaidrey/incubator-airflow,criccomini/airflow,criccomini/airflow,artwr/airflow,sid88in/incubator-airflow,airbnb/airflow,cfei18/incubator-airflow,malmiron/incubator-airflow,spektom/incubator-airflow,cfei18/incubator-airflow,wileeam/airflow,andyxhadji/incubator-airflow,r39132/airflow,lyft/incubator-airflow,edgarRd/incubator-airflow,sid88in/incubator-airflow,danielvdende/incubator-airflow,apache/incubator-airflow,airbnb/airflow,jgao54/airflow,nathanielvarona/airflow,mtagle/airflow,mistercrunch/airflow,gtoonstra/airflow,adamhaney/airflow,mrkm4ntr/incubator-airflow,Acehaidrey/incubator-airflow,sid88in/incubator-airflow,apache/airflow,dhuang/incubator-airflow,dhuang/incubator-airflow,danielvdende/incubator-airflow,adamhaney/airflow,fenglu-g/incubator-airflow,criccomini/airflow,akosel/incubator-airflow,lyft/incubator-airflow,wooga/airflow,criccomini/airflow,wileeam/airflow,DinoCow/airflow,danielvdende/incubator-airflow,danielvdende/incubator-airflow,Acehaidrey/incubator-airflow,spektom/incubator-airflow,akosel/incubator-airflow,danielvdende/incubator-airflow,fenglu-g/incubator-airflow,DinoCow/airflow,mrkm4ntr/incubator-airflow,bolkedebruin/airflow,wileeam/airflow,bolkedebruin/airflow,danielvdende/incubator-airflow,Fokko/incubator-airflow,malmiron/incubator-airflow,apache/airflow,artwr/airflow,sekikn/incubator-airflow,Fokko/incubator-airflow,andyxhadji/incubator-airflow,mistercrunch/airflow,spektom/incubator-airflow,r39132/airflow,jgao54/airflow,artwr/airflow,r39132/airflow,mistercrunch/airflow,bolkedebruin/airflow,DinoCow/airflow,fenglu-g/incubator-airflow,malmiron/incubator-airflow,gtoonstra/airflow,sekikn/incubator-airflow,wooga/airflow,bolkedebruin/airflow,Acehaidrey/incubator-airflow,apache/airflow,mistercrunch/airflow,cfei18/incubator-airflow,wooga/airflow,mtagle/airflow,akosel/incubator-airflow,nathanielvarona/airflow,cfei18/incubator-airflow,akosel/incubator-airflow,bolkedebruin/airflow,mtagle/airflow,Acehaidrey/incubator-airflow,wileeam/airflow,apache/incubator-airflow,apache/incubator-airflow,r39132/airflow,andyxhadji/incubator-airflow,Fokko/incubator-airflow,spektom/incubator-airflow,sid88in/incubator-airflow,edgarRd/incubator-airflow,airbnb/airflow,airbnb/airflow,Acehaidrey/incubator-airflow,jgao54/airflow,lyft/incubator-airflow,dhuang/incubator-airflow,Fokko/incubator-airflow,DinoCow/airflow,apache/airflow,andyxhadji/incubator-airflow,apache/airflow,nathanielvarona/airflow,malmiron/incubator-airflow,edgarRd/incubator-airflow,fenglu-g/incubator-airflow