CI: decouple HTTP and DNS testing in K8sPolicyTest
CI: decouple HTTP and DNS testing in K8sPolicyTest

We previously implicitly tested pod-DNS lookup while connecting to
www.google.com. Switching to 1.1.1.1 sidesteps the DNS lookup so that a
failure here can only be related to the actual connection, not to the
DNS behaviour of the pod or the cluster DNS server.

Signed-off-by: Ray Bejjani <7f525154e857f3d57a641a83dddc584f42addc6a@isovalent.com>

cilium-team/cilium,cilium/cilium,tgraf/cilium,cilium/cilium,michi-covalent/cilium,cilium/cilium,cilium-team/cilium,tgraf/cilium,tklauser/cilium,tklauser/cilium,tklauser/cilium,michi-covalent/cilium,tgraf/cilium,tklauser/cilium,tgraf/cilium,tklauser/cilium,cilium/cilium,michi-covalent/cilium,cilium/cilium,tgraf/cilium,michi-covalent/cilium,michi-covalent/cilium,tgraf/cilium