FEATIURE: Make HeaderBid calls 2-3s BEFORE we refresh any ads on the page.

[adentify]

Sticky/Refreshed ads need to be supported and we need to make best use of all markets by querying them every time we want an ad.

This means we need to query our HB providers BEFORE we refresh an ad in the page. This should be done in it's own Function as we can separate this from the init(0 call

function tmgAdsRefreshHeaderBidders(obj){

}