WELSH rugby international Ellis Jenkins has come up with a challenge that will raise funds for a Cardiff charity, providing fun and fitness to the sporting public whilst possibly driving them nuts!   The Cardiff Blues flanker is an ambassador for City Hospice, the only provider of home-based specialist palliative care in the capital. Due to the Covid-19 pandemic, all of the charity’s fundraising events have been cancelled, leading Ellis to come up with the idea of the 2020 Keep…