[tripleo][ptg] Wallaby PTG timezone - 1300-1700 UTC

Hi folks,

Unless there is disagreement and we can find a better time that suits all, the current plan is to use the same timezone as we had in the last virtual PTG - that is 1300-1700 UTC ( https://etherpad.opendev.org/p/tripleo-ptg-wallaby ).

Please speak up if you would like to propose and discuss an alternative

thanks, marios