Adding codecov targets and thresholds (#7433)
Adding codecov targets and thresholds (#7433)

* Adding codecov targets and thresholds

* Changing diff coverage rules to 1% threshold

* Changing codecov threshold to 0 and removing ignore

airbnb/superset,airbnb/superset,apache/incubator-superset,airbnb/caravel,mistercrunch/panoramix,airbnb/superset,apache/incubator-superset,mistercrunch/panoramix,mistercrunch/panoramix,apache/incubator-superset,airbnb/caravel,zhouyao1994/incubator-superset,airbnb/caravel,zhouyao1994/incubator-superset,mistercrunch/panoramix,zhouyao1994/incubator-superset,apache/incubator-superset,apache/incubator-superset,zhouyao1994/incubator-superset,airbnb/superset,airbnb/caravel,zhouyao1994/incubator-superset