The upserts performed by the $config.data.create() function may fail with a NoProgressMade error response from mongos due to a shard returning a CannotImplicitlyCreateCollection error response after the collection has been dropped.

const cmdRes = db.runCommand({
    update: collName,
    updates: [{
        q: {_id: i},
        u: {$set: {a: i, b: this.nDocs - i, c: i, d: this.nDocs - i, e: "foo"}},
        upsert: true
    }]
});

We should add ErrorCodes.NoProgressMade to the $config.data.kAllowedErrors list.