Update CHANGELOG about #9879 and #9796
Update CHANGELOG about #9879 and #9796

gitebra/vagrant,mitchellh/vagrant,marxarelli/vagrant,bryson/vagrant,mitchellh/vagrant,bryson/vagrant,chrisroberts/vagrant,marxarelli/vagrant,sni/vagrant,marxarelli/vagrant,sni/vagrant,chrisroberts/vagrant,gitebra/vagrant,gitebra/vagrant,gitebra/vagrant,mitchellh/vagrant,chrisroberts/vagrant,bryson/vagrant,sni/vagrant,chrisroberts/vagrant,marxarelli/vagrant,sni/vagrant,bryson/vagrant,mitchellh/vagrant